There are 50 stickers in Box A and 30 stickers in Box B.
Some stickers are transferred from Box A to Box B.
Box B has 30 more stickers than Box A.
How many stickers are transferred from Box A to Box B?
|
Box A |
Box B |
Before |
50 |
30 |
Change |
- ? |
+ ? |
After |
1 u |
1 u + 30 |
Total number of stickers
= 50 + 30
= 80
In the end
Total number of stickers = 1 u + 1 u + 30 = 2 u + 30
The total number of stickers at first and in the end remains unchanged.
2 u + 30 = 80
2 u = 80 - 30 = 50
1 u = 50 ÷ 2 = 25
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
= 50 - 25
= 25
Answer(s): 25