There are 65 stickers in Container X and 25 stickers in Container Y.
Some stickers are transferred from Container X to Container Y.
Container X has 10 more stickers than Container Y.
How many stickers are transferred from Container X to Container Y?

	Container X	Container Y
Before	65	25
Change	- ?	+ ?
After	1 u + 10	1 u

Total number of stickers
= 65 + 25
= 90

Total number of stickers in the end = 1 u + 10 + 1 u = 2 u + 10

The total number of stickers at first and in the end remains unchanged.

2 u + 10 = 90
2 u = 90 - 10 = 80

1 u = 80 ÷ 2 = 40

Number of stickers that are transferred from Container X to Container Y
= Number of stickers in Container Y in the end - Number of stickers in Container Y at first
= 40 - 25
= 15

Answer(s): 15