math/hurry
posted by Kirk .
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total
students are in the class?

math/hurry 
Reiny
Ratio of boys : girls = 5:7 or how about 5x : 7x
so 5x = 15
wouldn't there be 5x + 7x or 12x students ?
take it from here. 
math/hurry 
Jen
5/7=15/x, x=21

math/hurry 
esdeeeeeeeeeeeeeeeeeeeee
dcXC

math/hurry 
Erhan
In a gym class, the ratio of girls to the total number of students is 7:10. There are 9 boys in the gym class. How many students are in the gym class

math/hurry 
joanne
21 people on trip ratio boys to girls is 2:5 how many girls went in trip

math/hurry 
Anonymous
Correct answers
Respond to this Question
Similar Questions

math
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total students are in the class? 
math
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total students are in the class? 
Math 156
The ratio of girls to boys in Mr. Maddox's class of 20 students is 3:2. The ratio of girls to boys in Ms. Woods class of 17 students is 2:1. which teacher has more girls? 
math
A class of 25 students has 10 boys. Three boys have braces and 4 girls have braces. a) What is the ratio of boys with braces to boys in class? 
math
8) A high school graduating class is made up of 445 students. There are 97 more girls than boys. How many boys are in the class? 
Maths
There are 40 pupils in a class. There are 10 more boys than girls. When some boys from another class join the class, the percentage of boys to girls becomes 70%. How many boys joined the class? 
math/hurry
The ratio of boys to girls in a graduation class is 5:4. If there are 153 pupils in this class, how many boys are there? 
Math 1350
Mrs. Smith's classroom can hold at the most 30 students. Her first period class had 4 boys for every 3 girls. When 3 boys and 1 girl were added to the class, the new ratio became 3 boys to 2 girls. How many total students are now in … 
Mathematics
There are 5 girls more than boys in a class. if 2 boys joined the class the ratio of girls to boys is 5:4. find the total number of student in the class. 
Math
can you please help me work on this problem?