Problema Solution
There were 85 erasers in box A and 15 erasers in box B. When an equal number of erasers were added to each box, the number of erasers in box A was 3 times as many as that in box B. How many erasers were added to each box?
Answer provided by our tutors
let x be the number of erasers added to each box
after adding the x erasers
box A will have 85 + x erasers
box B will have 15 + x erasers
the number of erasers in box A was 3 times as many as that in box B
85 + x = 3 (15 + x)
x = 20 erasers
there were 20 erasers added to each box.