There are 70 stickers in Box H and 40 stickers in Box J.
Some stickers are transferred from Box H to Box J.
Box H has 20 more stickers than Box J.
How many stickers are transferred from Box H to Box J?
|
Box H |
Box J |
Before |
70 |
40 |
Change |
- ? |
+ ? |
After |
1 u + 20 |
1 u |
Total number of stickers
= 70 + 40
= 110
Total number of stickers in the end = 1 u + 20 + 1 u = 2 u + 20
The total number of stickers at first and in the end remains unchanged.
2 u + 20 = 110
2 u = 110 - 20 = 90
1 u = 90 ÷ 2 = 45
Number of stickers that are transferred from Box H to Box J
= Number of stickers in Box J in the end - Number of stickers in Box J at first
= 45 - 40
= 5
Answer(s): 5