There are 55 stickers in Box N and 25 stickers in Box P.
Some stickers are transferred from Box N to Box P.
Box N has 20 more stickers than Box P.
How many stickers are transferred from Box N to Box P?
|
Box N |
Box P |
Before |
55 |
25 |
Change |
- ? |
+ ? |
After |
1 u + 20 |
1 u |
Total number of stickers
= 55 + 25
= 80
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 = 80
2 u = 80 - 20 = 60
1 u = 60 ÷ 2 = 30
Number of stickers that are transferred from Box N to Box P
= Number of stickers in Box P in the end - Number of stickers in Box P at first
= 30 - 25
= 5
Answer(s): 5