There are 70 stickers in Container D and 60 stickers in Container E.
Some stickers are transferred from Container D to Container E.
Container E has 50 more stickers than Container D.
How many stickers are transferred from Container D to Container E?
|
Container D |
Container E |
Before |
70 |
60 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 50 |
Total number of stickers
= 70 + 60
= 130
In the end
Total number of stickers = 1 u + 1 u + 50 = 2 u + 50
The total number of stickers at first and in the end remains unchanged.
2 u + 50 = 130
2 u = 130 - 50 = 80
1 u = 80 ÷ 2 = 40
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
= 70 - 40
= 30
Answer(s): 30