There are 10 stickers in Container D and 10 stickers in Container E.
Some stickers are transferred from Container D to Container E.
Container E has 10 more stickers than Container D.
How many stickers are transferred from Container D to Container E?
|
Container D |
Container E |
Before |
10 |
10 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 10 |
Total number of stickers
= 10 + 10
= 20
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 = 20
2 u = 20 - 10 = 10
1 u = 10 ÷ 2 = 5
Number of stickers that are transferred from Container D to Container E
= Number of stickers in Container D at first - Number of stickers in Container D in the end
= 10 - 5
= 5
Answer(s): 5