There are 55 stickers in Box T and 55 stickers in Box U.
Some stickers are transferred from Box T to Box U.
Box U has 20 more stickers than Box T.
How many stickers are transferred from Box T to Box U?
|
Box T |
Box U |
Before |
55 |
55 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 20 |
Total number of stickers
= 55 + 55
= 110
In the end
Total number of stickers = 1 u + 1 u + 20 = 2 u + 20
The total number of stickers at first and in the end remains unchanged.
2 u + 20 = 110
2 u = 110 - 20 = 90
1 u = 90 ÷ 2 = 45
Number of stickers that are transferred from Box T to Box U
= Number of stickers in Box T at first - Number of stickers in Box T in the end
= 55 - 45
= 10
Answer(s): 10