There are 60 stickers in Box E and 10 stickers in Box F.
Some stickers are transferred from Box E to Box F.
Box F has 10 more stickers than Box E.
How many stickers are transferred from Box E to Box F?
|
Box E |
Box F |
Before |
60 |
10 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 10 |
Total number of stickers
= 60 + 10
= 70
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 = 70
2 u = 70 - 10 = 60
1 u = 60 ÷ 2 = 30
Number of stickers that are transferred from Box E to Box F
= Number of stickers in Box E at first - Number of stickers in Box E in the end
= 60 - 30
= 30
Answer(s): 30