There are 90 stickers in Box A and 65 stickers in Box B.
Some stickers are transferred from Box A to Box B.
Box B has 25 more stickers than Box A.
How many stickers are transferred from Box A to Box B?
|
Box A |
Box B |
Before |
90 |
65 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 25 |
Total number of stickers
= 90 + 65
= 155
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 = 155
2 u = 155 - 25 = 130
1 u = 130 ÷ 2 = 65
Number of stickers that are transferred from Box A to Box B
= Number of stickers in Box A at first - Number of stickers in Box A in the end
= 90 - 65
= 25
Answer(s): 25