There are 70 stickers in Container H and 35 stickers in Container J.
Some stickers are transferred from Container H to Container J.
Container H has 15 more stickers than Container J.
How many stickers are transferred from Container H to Container J?

	Container H	Container J
Before	70	35
Change	- ?	+ ?
After	1 u + 15	1 u

Total number of stickers
= 70 + 35
= 105

Total number of stickers in the end = 1 u + 15 + 1 u = 2 u + 15

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

2 u + 15 = 105
2 u = 105 - 15 = 90

1 u = 90 ÷ 2 = 45

Number of stickers that are transferred from Container H to Container J
= Number of stickers in Container J in the end - Number of stickers in Container J at first
= 45 - 35
= 10

Answer(s): 10