There are 100 stickers in Box H and 40 stickers in Box J.
Some stickers are transferred from Box H to Box J.
Box H has 40 more stickers than Box J.
How many stickers are transferred from Box H to Box J?
|
Box H |
Box J |
Before |
100 |
40 |
Change |
- ? |
+ ? |
After |
1 u + 40 |
1 u |
Total number of stickers
= 100 + 40
= 140
Total number of stickers in the end = 1 u + 40 + 1 u = 2 u + 40
The total number of stickers at first and in the end remains unchanged.
2 u + 40 = 140
2 u = 140 - 40 = 100
1 u = 100 ÷ 2 = 50
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
= 50 - 40
= 10
Answer(s): 10