There are 70 stickers in Container K and 60 stickers in Container L.
Some stickers are transferred from Container K to Container L.
Container L has 60 more stickers than Container K.
How many stickers are transferred from Container K to Container L?

	Container K	Container L
Before	70	60
Change	- ?	+ ?
After	1 u	1 u + 60

Total number of stickers
= 70 + 60
= 130

In the end
Total number of stickers = 1 u + 1 u + 60 = 2 u + 60

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

2 u + 60 = 130
2 u = 130 - 60 = 70

1 u = 70 ÷ 2 = 35

Number of stickers that are transferred from Container K to Container L
= Number of stickers in Container K at first - Number of stickers in Container K in the end
= 70 - 35
= 35

Answer(s): 35