Question

What would the answer to this be?

Show working out please I want to check if what I did was correct.

Answer 1

total is 25
boys : girls
2 : 3
2+3=5
25/5=5
5*3=15
15 boys

Answer 2

STEPS:

1) set up an equation. use x as a variable

2x + 3x = 25

2) solve the equation for x:

5x = 25
x = 5

3) Now that you know the value of x, substitute it into the expression for how any girls there are, which is "3x" (since the ratio of BOYS to GIRLS is 2:3):

3x
= 3(5)
= 15

So 15 is your answer, and there are 15 girls in the class.