There are 75 stickers in Box J and 40 stickers in Box K.
Some stickers are transferred from Box J to Box K.
Box K has 15 more stickers than Box J.
How many stickers are transferred from Box J to Box K?
|
Box J |
Box K |
Before |
75 |
40 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 15 |
Total number of stickers
= 75 + 40
= 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 J to Box K
= Number of stickers in Box J at first - Number of stickers in Box J in the end
= 75 - 50
= 25
Answer(s): 25