# algebra

posted by .

There are 51 students in a certain class. The number of females is 5 less than 3 times the number of males. find the number of females and the number of males in the class.

• algebra -

Find three consecutive integers such that the sum of the smallest and largest integer is equal to twice the middle number

• algebra -

number of males --- x
number of females --- 3x-5

Can you form the equation from here and solve it?

• FOR NEIL -algebra -

Please do not post a new question as a reply to somebody else's problem.
Tutors might think it has been answered and not look at it.

I will set it up for you...

1st integer ---- x
2nd integer ----x+1
3rd integer ----x + 2

"smallest plus largest equals twice the middle"
x + (x+2) = 2(x+1)

solve....

ahhh, glancing at this equation it is obvious that you will get
0=0
that means that it will be true for all consecutive even integers.
e.g. let's try 4,5,6
is 4+6 = 2(5) ? YES

## Similar Questions

1. ### math 156

the ratio of males to females in a college class is 2:6. if there are 72 students in the class, how many are males?
2. ### statistics

A certain geneticist is interested in the proportion of males and females in the population that have a certain minor blood disorder. In a random sample of 1500 males, 75 are found to have disorder, whereas 80 of 2000 females appear …
3. ### math

In a class of 71 students, the number of females is one fewer than twice the number of males. How many females and how many males are there in the class?
4. ### math

If your class has 10 males and 14 females in it, how many different committees consisting of 4 males and 4 females may be chosen.
5. ### Math

In a class of 29 males and females there are 12 females. Write the ratio of males to females. Solve. Express each ratio as a fraction reduced to lowest terms.
6. ### MATHS

The ratio of the number of males to the females at a performance is 5 : 7. 1/4 of the males and 3/4 of the females are children. What is the ratio of the number of adults to children?
7. ### algebra

A math class has a total of 47 students. the number of females is 17 less than the numberof males. how many males and how many females are in class?
8. ### Math

Forty-five percent of a large class of students in Statistics are females. Suppose 28 students are selected at random from the class. Use a normal approximation with continuity correction to calculate the probability that the number …
9. ### math

A room contains 80 sophomores of which 39 are males and 41 are females. There are also 69 juniors of which 36 are males and 33 are females. You pick 3 students at random. What is the probability that all 3 are males?
10. ### algebra

A Spanish class has a total of 46 students. The number of females is 14 less than the number of males. How many males and how many females are in the class?

More Similar Questions