There are 100 stickers in Box W and 65 stickers in Box X.
Some stickers are transferred from Box W to Box X.
Box X has 15 more stickers than Box W.
How many stickers are transferred from Box W to Box X?
|
Box W |
Box X |
Before |
100 |
65 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 15 |
Total number of stickers
= 100 + 65
= 165
In the end
Total number of stickers = 1 u + 1 u + 15 = 2 u + 15
The total number of stickers at first and in the end remains unchanged.
2 u + 15 = 165
2 u = 165 - 15 = 150
1 u = 150 ÷ 2 = 75
Number of stickers that are transferred from Box W to Box X
= Number of stickers in Box W at first - Number of stickers in Box W in the end
= 100 - 75
= 25
Answer(s): 25