There are 90 stickers in Box V and 40 stickers in Box W.
Some stickers are transferred from Box V to Box W.
Box W has 30 more stickers than Box V.
How many stickers are transferred from Box V to Box W?
|
Box V |
Box W |
Before |
90 |
40 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 30 |
Total number of stickers
= 90 + 40
= 130
In the end
Total number of stickers = 1 u + 1 u + 30 = 2 u + 30
The total number of stickers at first and in the end remains unchanged.
2 u + 30 = 130
2 u = 130 - 30 = 100
1 u = 100 ÷ 2 = 50
Number of stickers that are transferred from Box V to Box W
= Number of stickers in Box V at first - Number of stickers in Box V in the end
= 90 - 50
= 40
Answer(s): 40