Shiyun had 5 times as many erasers as Min at first. After Shiyun gave 20 erasers to Min, they each had the same number of erasers in the end. How many erasers did Min have in the end?
| |
Shiyun |
Min |
| Before |
5 u |
1 u |
| Change |
- 20 |
+ 20 |
| After |
5 u - 20 |
1 u + 20 |
Comparing Shiyun and
Min in the end |
1 |
1 |
The number of erasers that Shiyun and Min had in the end is equal.
5 u - 20 = 1 u + 20
5 u - 1 u = 20 + 20
4 u = 40
1 u = 10
Number of erasers that Min had in the end
= 1 u + 20
= 10 + 20
= 30
Answer(s): 30
