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May 27, 2015

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5th math
Mr. davison has 30 students in his class . He has four more girls than boys. How many boys are in Mr. Davision class? can you please check my answer? I got 11 boys . does it sound about right ?
January 27, 2011 by pat

Maths
Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 . Why? Thanks
May 21, 2014 by Josh

Maths
Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 . Why? Thanks
May 22, 2014 by Josh

Statistics
In planning a family of 4 children assume boys and girls are equally likely on each birth. Find (i) the probability distribution (ii) the expected number of boys (iii) the standard deviation of the number of boys.
March 17, 2011 by Donald Crentsil

math
If the ratio is students in a class is 8 to 5 and there are 135 more boys then how many girls are in the class
November 12, 2014 by Anonymous

math
2 students are chosen at random from a group of 120 students that has 60 boys and 60 girls. What is the probability that the students are either both boys or both girls
January 20, 2015 by A

math
The number of boys in a certain class exceed the number of girls by 7. If the number of boys is 5/4 of the number of girls, how many boys are there in the class? The choices of answers are: a) 21 b) 28 c) 35 d) 42 e) 63 I figured out that the answer is 35, but I did it by ...
February 12, 2010 by sylvie

Maths
A moment ago, 80% of the children in a hall were girls. 48 girls and 2 boys left the hall. The remaining children were then told to form groups of 9. In each group, there were 2 boys. How many children were there in the hall first?
March 7, 2012 by Surya

math for Ms. Sue
The fifth grade marching band includes boys and girls. There are 28 boys in the marching band. The 28 boys are 7/10 of the students in the marching band. a. What fraction of the students n the marching band are girls? b. What is the total number of students in the marching ...
April 25, 2013 by Anonymous

Math
A math class has girls and boys in the seventh grade and girls and boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls? Write your ...
May 1, 2013 by MADISON

mathematics
solve problem using ratio 5:8 in a school are girls and 135 boys how many children are in the school in total.
September 3, 2014 by Anonymous

Math
The ratio of boys to girls at a day care center is 5 to 4. Which of following cannot be the total number of children at the center? A. 27 B. 54 C. 60 D. 72
November 29, 2014 by Mike

pre-algebra
There are 1,400 students in a school.The number of girls is 3/4 the number of boys.How many students are in the other grade levels if 1/6 of the girls and 1/5 of the boys in first grade?
September 12, 2013 by Fernando

Math (5th grade)
There are 8 more girls than boys in the Math Club. The club has 44 memebers. How many boys and how many girls are in the club? Show your work.
August 24, 2011 by Leann

Estimation and Computation
The ratio of boys to girls in a class is 2:3. If a student is chosen at random to be on the student council, what is the probability it will be a girl?
March 28, 2013 by Taylor

ACT Math
Of the 60 students in a school, 24 are currently studying chemistry. Exactly 16 of the girls in the school are not currently studying chemistry. The number of girls in the school is 33. How many boys are currently studying chemistry? Correct answer is 17. How did they get that...
August 27, 2013 by Java

statistics
150 students is 60 kg the mean of body is 70 kg withstandard deviation of 10 kg and mean weight of girls is 55 kg with standard deviation of 15kg.calculate the number of boys and the combined standard deviation. Also find whether the coefficient of deviation is hired for girls...
August 11, 2014 by Anonymous

Permutation
In how many ways can 5 boys and 5 girls be seated around a table so that no 2 boys are adjacent?
February 27, 2011 by Rey

math
Math word problem: There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class.
October 2, 2012 by Lisa

math
There are are 20% more girls than boys in the senior class.What percentage of the seniors are girls?
March 24, 2012 by Shambhavi

6th grade math
if there are 24 kids in a class and 11 more boys than girls how many girls are there?
April 20, 2015 by selby

math
350 student in the school, 3 boys for every 2 girls how boys are there?
September 21, 2014 by lea

math HELP PLZ DO MINE
There are 64 kids in the swimming pool there are 8 more girls than boys How many Boys are there?
March 4, 2012 by gabby

math
mrs. cooper's class has 11 more girls than boys. there are 35 students in all. how many girls are there?
December 15, 2011 by viri

Math
if 3/5 of the class are boys and there are 12 more boys than girls. How many girls are there in the class?
June 4, 2013 by Jenna

math
there are 13 more girls than boys on the playground. there are 22 boys. how many girls are on the playground
December 8, 2014 by Anonymous

Math
There 1170 students in a school. The ration of girls to boys is 23:22. The system below describes relatioonships between the number of girls and the number of boys. g+b=1170 g/b=23/22 a. what's the proportion for g when you solve it? b. how do you solve the system?
March 30, 2009 by Angie

math
if there are 10 more girls than boys in a club with 60 members, how many are boys?
June 28, 2012 by grace

math
in a class there are 4 boys for every 6 girls. there are 54 pupils. how many boys are there?
December 28, 2012 by che

math/hurry
there are 3 boys for every 4 girls.how many are boys in a class of 42?
January 10, 2013 by mel

math
pls help. There are three times as many girls than boys in a school choir. If there are 27 girls how many children are there altogether. Thank you
August 24, 2011 by ST pls ASAP

math
there are 45 children in a class.if there are 3 more girls than boys,how many are girls?
September 4, 2012 by marc

math
there are 45 children in a class.if there are 3 more girls than boys,how many are girls?
September 4, 2012 by marc

math 4
write a sentence to describe the ratio in the context of the situation you chose. A. 1 to 2 = 1 to 2 marshmallows per cup. B. 29 to 30= 29 girls to 30 boys C. 52:12 not sure how to write this one ?
September 10, 2013 by Rem

maths
1)There are 7 groups of Scouts attending a campfire with an average of 28 scouts per group. Each group has a different number of scouts. If the largest group has 33 scouts in it, what is the smallest possible number of scouts in each group? 2)The average amount of money that 5...
September 26, 2011 by joi

math
Oops,first question was wrong. Sorry. There are 30 kids in a class room.3/5 of them are girls. How many are boys and how many are girls.
June 4, 2012 by eliza

Math
Mrs coopers 5th grade class has 11 more girls than boys. There are 35 students in all. How many girls are there?
January 24, 2013 by Chad

math
On a class trip there wre 30 more girls than boys.The total number of students on the trip was 210.Write and solve an equation to find the number of girls and the number of boys on the class trip.
January 28, 2014 by ashley

math
A man decided to give 12 pieces of candy to each of the girls in his town and 8 pieces of candy to each of the boys. Of the 612 children in his town, only half the girls and three quarters of the boys were allowed to take the candy. How many pieces of candy did the gentleman ...
October 12, 2010 by Anonymous

statistics
assuming that boys and girls are equally likely, estimate the probability of getting at least 32 boys out of 60 births
May 8, 2010 by camera

math
In how many ways can 4 boys and 4 girls sit around a circle table if each boy sits between two girls?
October 11, 2013 by Epic

statistics
For every 100 births in the U.S., the number of boys follows, approxiamately, a normal curve with a mean of 51 and standard deviation of 5 boys. If the next 100 births in your local hospital resulted in 36 boys (and thus 64 girls) would that be unusual?
April 5, 2011 by Anonymous

math
At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind, and the number of girls decreased by 20%. How many girls were at the camp in the beginning?
March 3, 2015 by jessi

math
At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind, and the number of girls decreased by 20%. How many girls were at the camp in the beginning?
March 5, 2015 by Ally

math
3/4 of the students in a school were girls and the rest were boys. 2/3 of the girls and 1/2 of the boys attended the school carnival. Find the total number of students in the school if 330 students did not attend the carnival.
October 29, 2012 by Nai

MATH - URGENT!!!
There are 5 boys and 4 girls in my class. In how many ways can they be seated in a row of 9 chairs such that at least 3 girls are all next to each other?
October 6, 2013 by Speedo

math
The 5th grade marching band includes boys & girls. There are 28 boys in a marching band. The boys are 7/10 of the students in the marching band. What fraction of students in the marching band girls? What is the total number of students in the marching band?
February 24, 2012 by nina

math in focus
at a baseball game, there were three times as many males as females. 5/6 of the males were boys and the rest were men. 2/3 of the females were girls and the rest were women. Given that there were 121 more boys than girls, how many adults were there at the baseball game?
November 21, 2013 by Anonymous

math
at a baseball game, there were three times as many males as females. 5/6 of the males were boys and the rest were men. 2/3 of the females were girls and the rest were women. Given that there were 121 more boys than girls, how many adults were there at the baseball game?
October 29, 2012 by scoob

Math
There are 92 boys. There are 14 fewers girls. How many are the girls are there?
April 30, 2014 by Hannah

maths
1. A die labelled A has one face marked 1, one face marked 2 and the other four faces marked 3. A die labelled B has four faces marked 2 and two faces marked 3. The dice A and B are thrown. Calculate the probability is 5. I got 18/36 2. There are 12 boys and 20 girls in a ...
June 3, 2009 by Anonymous

Statistics
A number of grade school students were asked about their perceived math ability and the results are in the table below. Below Average = BA Average = A Above Average = AV BA A AV Girls 61 54 21 Boys 43 61 42 Test at the 0.01 level if there is a difference between girls and boys...
December 9, 2012 by Maria Elizabeth

Math
A class consists of 16 boys,12girls, and 2 teachers. How many different committees of size eight can be formed if the committee must consist of 4 boys 3 girls and one teacher?
February 13, 2013 by Abby

layla
Mrs. Baker has to choose 2 students to lead the class field trip. If she draws from a list of 6 boys and 6 girls, what is the probability that 2 girls will be drawn? (Please Help!) A.1/7 B.5/24 C.5/22 D.5/6
April 24, 2011 by math

3rd Grade Math
There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class? How can I explain this to my 8yr old in 3rd grade? I've got myself so confused in the process of trying to figure it out ...
October 2, 2012 by Lisa

ratio
if 3 out of every 7 student are boys , write equivanent fractions that can be used to determine how many out of 84 are boys. use a variable to represent the number of boys help me please i need it for tomarrow
February 22, 2010 by marivel

algebra
Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original number of girls in class...
November 4, 2014 by nimal

algebra
Classes A and B have 35 students each. If seven girls shift from class A to class B, then the number of girls in the classes would interchange. If four girls shift from class B to class A, then the number of girls in class A would be twice the original number of girls in class...
November 4, 2014 by nimal

math
there are 80 students in math club. For every 5 girls, there are 3 boys. How many girls & boys in club.
June 23, 2011 by mary

Maths
Really really need some help here., There was an I.T. Fair. 2/9 of the visitors were children. There were 4000 more adults than children. The ratio of boys to the number of girls was 3:5. The ratio of number of men to number of women was 3:1. Find the number of all male ...
October 7, 2014 by J.Sarah

6th grade Math
The number of girls in a class is 70% of the number of boys. If the class has 25 boys, how many girls are in the class?
January 14, 2010 by Vickie

Math
Sustem of equations. I have to solve the system of equations by graphing and solving. Ther are thirty-three students in the Chess Club. There are five more boys than girls in the club. Write and solve a system of equations to find the number of boys and girls in the chess club.
January 29, 2013 by Alexis

Math (9th)
A classroom contained an equal number of boys and girls. Eight girls left to play hockey, leaving twice as many boys as girls in the classsroom. What was the original number of students present? 32 students? In a recent election at the Dr. John Hugh Gillis High School, Susie ...
March 29, 2012 by Rezu

math
In a certain class there are 12 boys and 18 girls. If the class average for an algebra exam is 90 and the boys' average score is 87, what is the girls' average score?
July 16, 2014 by John

Statistics
The variance of the mathematical scores of a sample of 21 high school girls was found to be 100 and that of a sample of 25 high school boys was 169. Test the hypothesis that the scores of the high school boys are more varying that those of the high school girls at alpha = 0.05...
January 27, 2014 by Anonymous

Math
The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.
March 8, 2010 by MJ

math(5th grade)
In the choir, 1/2 of the members are boys and 1/2 are girls. If 1/4 of the boys are5th graders what fraction of the whole choir is 5th grade boys?
February 26, 2015 by ary

7th grade math help please the REAL ms.sue
1. Macís farm has a total of 18 horses and 27 cows. What is the ratio of horses to cows in simplest form? (1 point) 6 over 9 18 over 27 2 over 3 three over two 2. A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students? (1...
October 25, 2012 by Delilah

math
there are 40 pupils in a class. each girl is given 5 books and each boy is given 4 books.the girls have 65 more books than the boys. how many more girls than boys are there in the class?
June 13, 2013 by kyla

Math
A Classroom contains a total of 27 students. The number of girls is 7 more than three the number of boys. How many boys are in the class?
November 14, 2010 by Camille

Math
How do you solve this equation; There are 128 7th graders at Mark's school, if there are 16 more girls than boys, how many 7th grade boys are there?
October 13, 2012 by Bill

maths
Suppose that in a class there are 8 people, 5 boys and 3 girls. We want to choose a team of 3 people with 2 boys and 1 girl. How many different groups can be formed?
September 2, 2013 by Susie

Math 117
A class has 10 boys and 12 girls. In how many ways can a committee of four be selected if the committee can have at most two girls?
October 3, 2008 by Stephen

math probability
3 people are selected at random without replacement out of 12 girls and 3 boys. What is the probability of selecting all girls?
April 19, 2011 by Anonymous

Math
The 80 8th graders took a trip. The boys numbered 16 fewer than twice the number of girls. How many of the eighth graders are girls?
January 13, 2015 by Zack

Math
Probability -if desks are grouped by 4 and if there are 11 boys and 13 girls in a class what is the probability that I will get placed in a group of all girls?
October 14, 2008 by Olivia

algebra
There are 384 seventh graders at MArk's school. If there are 48 more girls than boys, how many seventh grade girls are there?
January 26, 2010 by Anonymous

Math
The ratio of boys to girls in the checkers club at one school is 2:3. the number of club members is more than 20 and fewer than 30. how many club members are there?
February 22, 2015 by Sam

math
A play is being put on at the school. There are 9 possible roles for girls who are trying out and 10 roles for boys who are trying out. If 16 girls and 12 boys try out, what percent of chance does one girl have of getting in? What percent does one boy have?
April 13, 2010 by Jill

basic math
In one class, there are 15 boys and 30 girls. Approximately what percentage of the students in the class are boys?
March 12, 2012 by strawberry caca

Math
There are 750 students in a school. If the number of girls is 120 more than the boys, how many boys are there in the school?
February 8, 2015 by Student

math
There are 15 students in Marcelo chess club. There are 2 times as many boys as girls . Howm many girls are in the club?
April 5, 2012 by nick

math
there are 13 boys and 14 girls in mrs greens class if 3 of the students are absent today what is the ratio of students absent to students present?
April 19, 2014 by kay

Writing
Can you proofread my writing? What grade would you give me? Decisions, Decisions, Decisions Decisions everyone has to make them. Some decisions are hard and important and some are not. The decision I had to make was did I still want to be the statistician for the varsity Girls...
March 7, 2011 by Madelyn C.

Writing
Can you proofread my writing? What grade would you give me? Decisions, Decisions, Decisions Decisions everyone has to make them. Some decisions are hard and important and some are not. The decision I had to make was did I still want to be the statistician for the varsity Girls...
March 7, 2011 by Madelyn C.

Maths
A school has 1800 pupils. 55% of the pupils are girls. 30% of the girls and 70% pf the boys travel by bus. a.) How many girls travel by bus? b.) How many boys travel by bus? c.) What percentage of the pupils travel by bus?
October 7, 2012 by Student56

geometry
Write the equation and solve the problem: A high school graduating class is made up of 512 students. There are 70 more girls than boys. How many boys are in the class?
November 5, 2009 by Clair

Math 5th
4/7 of a group of children are boys. If there are 18 more boys than girls, how many children are there altogether?
January 20, 2012 by Patty

math ugh"
A class has 21 students . 10 boys and 11 girls . What fraction of the class is made up of boys
January 21, 2013 by Anonymous

algebra
The drama club has 41 members. There are nine more girls than boys. How many boys are in the club
March 3, 2015 by kay

school
Is there any specialized high school for either girls only or girls and boys seperate?
February 6, 2010 by Samantha

school
Is there any specialized high school for either girls only or girls and boys seperate?
February 6, 2010 by Samantha

math expressions
There are 89 students in a school band. The number of boys in the band is 5 more than twice the number of girls. What is the expression for the number of girls and an expression fornthe number of using the variables g to represent the girls.
October 22, 2014 by london

Math
Heres a challenge: six students(4 boys and girls) were divided into three pairs. given this information. What is the probability of 2 girls making 1 pair? Express as a common fraction. Oh and please explain!!
March 30, 2011 by Samantha

math
10 girls have their average age 14 year and 12 boys have their average age as 16 years . when 6 boys from these 12 join tha 10 girls,they all together have average age as 14.5 year .what is tha average age of tha remaining 6 boys.
May 31, 2011 by shweta

Math
a class has 10 boys and 5 girls; three students are selected from the class at random one after other. the probability that the first two boys and the third is a girl??
August 28, 2012 by math help2

7th grade math Ms.Sue please check my answers
1. Macís farm has a total of 18 horses and 27 cows. What is the ratio of horses to cows in simplest form? (1 point) 6 over 9 18 over 27 2 over 3 three over two 2. A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students? (1...
October 25, 2012 by Delilah

Math
Solve. There are 18 boys in a class. There are w fewer boys than girls. How many students are there in the class?
April 17, 2013 by Janey

math
The drama club has 41 members. There are 9 more girls than boys. How many girls are in the club?
July 29, 2013 by zeke

math (cant figure it out)
Activity Boys Girls Total Walk 3 6 Bike 5 3 Skateboard 2 1 Total ______________ What percentage of the total students chose skateboarding? 10% 20% 30% none of these** . 4. What percentage of the boys chose walking? 30%* 45% 25% none of these . 5. What percentage of the ...
April 20, 2014 by person

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