Question

Please help

there are 2 possible answers
Let x be the number of boys in a class and y be the number of girls. Which equation represents 2 boys for
every 5 girls? Select all that apply.
A. x=2y-5
B. x=5y-2
C. 5x=2y
D. x=2 1/2y
E. x=2/5y

Answer 1

C, E

Explanation:

You want the equations that represent 2 boys for every 5 girls in a class.

Ratio

The number of boys is represented by x, and the number of girls is represented by y, so you have ...

x : y = 2 : 5

As fractions, this is ...

x/y = 2/5

Other representations

Multiplying by 5y gives ...

5x = 2y . . . . . . matches equation C

Dividing by 5, we have ...

x = 2/5y . . . . . . matches equation E