There are 100 stickers in Container C and 25 stickers in Container D.
Some stickers are transferred from Container C to Container D.
Container C has 25 more stickers than Container D.
How many stickers are transferred from Container C to Container D?

	Container C	Container D
Before	100	25
Change	- ?	+ ?
After	1 u + 25	1 u

Total number of stickers
= 100 + 25
= 125

Total number of stickers in the end = 1 u + 25 + 1 u = 2 u + 25

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

2 u + 25 = 125
2 u = 125 - 25 = 100

1 u = 100 ÷ 2 = 50

Number of stickers that are transferred from Container C to Container D
= Number of stickers in Container D in the end - Number of stickers in Container D at first
= 50 - 25
= 25

Answer(s): 25