There are 90 stickers in Container A and 60 stickers in Container B.
Some stickers are transferred from Container A to Container B.
Container A has 10 more stickers than Container B.
How many stickers are transferred from Container A to Container B?
|
Container A |
Container B |
Before |
90 |
60 |
Change |
- ? |
+ ? |
After |
1 u + 10 |
1 u |
Total number of stickers
= 90 + 60
= 150
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 = 150
2 u = 150 - 10 = 140
1 u = 140 ÷ 2 = 70
Number of stickers that are transferred from Container A to Container B
= Number of stickers in Container B in the end - Number of stickers in Container B at first
= 70 - 60
= 10
Answer(s): 10