Question #af9a9

1 Answer
Feb 14, 2018

A: 96 erasers
B: 64 erasers
C: 80 erasers

Explanation:

If A, B, & C represent the number of erasers in each box, we know that A+B+C=240.
Given the final ratios of A:B:C=6:5:4, let's name the variable x for the number of erasers that make up the 6 parts in box A, the 5 parts in B, and the 4 parts in C.
This way, we can also say that 6x+4x+5x=240.

Solve for x:
6x+4x+5x=240

15x=240

(15x)/15=240/15

x=16

Plug x=16 back into the ratios to get the number of erasers in each case:
A:6(16)=96 erasers
B:4(16)=64 erasers
C:5(16)=80 erasers

Hope that helps!