There are 80 stickers in Box C and 25 stickers in Box D.
Some stickers are transferred from Box C to Box D.
Box D has 25 more stickers than Box C.
How many stickers are transferred from Box C to Box D?
|
Box C |
Box D |
Before |
80 |
25 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 25 |
Total number of stickers
= 80 + 25
= 105
In the end
Total number of stickers = 1 u + 1 u + 25 = 2 u + 25
The total number of stickers at first and in the end remains unchanged.
2 u + 25 = 105
2 u = 105 - 25 = 80
1 u = 80 ÷ 2 = 40
Number of stickers that are transferred from Box C to Box D
= Number of stickers in Box C at first - Number of stickers in Box C in the end
= 80 - 40
= 40
Answer(s): 40