There are 45 stickers in Box C and 15 stickers in Box D.
Some stickers are transferred from Box C to Box D.
Box C has 10 more stickers than Box D.
How many stickers are transferred from Box C to Box D?
|
Box C |
Box D |
Before |
45 |
15 |
Change |
- ? |
+ ? |
After |
1 u + 10 |
1 u |
Total number of stickers
= 45 + 15
= 60
Total number of stickers in the end = 1 u + 10 + 1 u = 2 u + 10
The total number of stickers at first and in the end remains unchanged.
2 u + 10 = 60
2 u = 60 - 10 = 50
1 u = 50 ÷ 2 = 25
Number of stickers that are transferred from Box C to Box D
= Number of stickers in Box D in the end - Number of stickers in Box D at first
= 25 - 15
= 10
Answer(s): 10