There are 75 stickers in Container S and 45 stickers in Container T.
Some stickers are transferred from Container S to Container T.
Container T has 10 more stickers than Container S.
How many stickers are transferred from Container S to Container T?

	Container S	Container T
Before	75	45
Change	- ?	+ ?
After	1 u	1 u + 10

Total number of stickers
= 75 + 45
= 120

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

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

2 u + 10 = 120
2 u = 120 - 10 = 110

1 u = 110 ÷ 2 = 55

Number of stickers that are transferred from Container S to Container T
= Number of stickers in Container S at first - Number of stickers in Container S in the end
= 75 - 55
= 20

Answer(s): 20