There are 95 stickers in Box R and 45 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 |
95 |
45 |
Change |
- ? |
+ ? |
After |
1 u + 10 |
1 u |
Total number of stickers
= 95 + 45
= 140
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 = 140
2 u = 140 - 10 = 130
1 u = 130 ÷ 2 = 65
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
= 65 - 45
= 20
Answer(s): 20