There are 35 stickers in Box R and 15 stickers in Box S.
Some stickers are transferred from Box R to Box S.
Box R has 10 more stickers than Box S.
How many stickers are transferred from Box R to Box S?
|
Box R |
Box S |
Before |
35 |
15 |
Change |
- ? |
+ ? |
After |
1 u + 10 |
1 u |
Total number of stickers
= 35 + 15
= 50
Total number of stickers in the end = 1 u + 10 + 1 u = 2 u + 10
The total number of stickers at first and in the end remains unchanged.
2 u + 10 = 50
2 u = 50 - 10 = 40
1 u = 40 ÷ 2 = 20
Number of stickers that are transferred from Box R to Box S
= Number of stickers in Box S in the end - Number of stickers in Box S at first
= 20 - 15
= 5
Answer(s): 5