There are 75 stickers in Box K and 50 stickers in Box L.
Some stickers are transferred from Box K to Box L.
Box K has 15 more stickers than Box L.
How many stickers are transferred from Box K to Box L?
|
Box K |
Box L |
Before |
75 |
50 |
Change |
- ? |
+ ? |
After |
1 u + 15 |
1 u |
Total number of stickers
= 75 + 50
= 125
Total number of stickers in the end = 1 u + 15 + 1 u = 2 u + 15
The total number of stickers at first and in the end remains unchanged.
2 u + 15 = 125
2 u = 125 - 15 = 110
1 u = 110 ÷ 2 = 55
Number of stickers that are transferred from Box K to Box L
= Number of stickers in Box L in the end - Number of stickers in Box L at first
= 55 - 50
= 5
Answer(s): 5