There are 100 stickers in Box S and 15 stickers in Box T.
Some stickers are transferred from Box S to Box T.
Box T has 15 more stickers than Box S.
How many stickers are transferred from Box S to Box T?
|
Box S |
Box T |
Before |
100 |
15 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 15 |
Total number of stickers
= 100 + 15
= 115
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 = 115
2 u = 115 - 15 = 100
1 u = 100 ÷ 2 = 50
Number of stickers that are transferred from Box S to Box T
= Number of stickers in Box S at first - Number of stickers in Box S in the end
= 100 - 50
= 50
Answer(s): 50