Shiyun and Tammy had the same number of erasers. After Shiyun had given away 68 erasers, Tammy had 5 times as many erasers as Shiyun. How many erasers did each of them have at first?
| |
Shiyun |
Tammy |
| Before |
1 u + 68 |
5 u |
| Change |
- 68 |
|
| After |
1 u |
5 u |
Number of erasers that Tammy had remains unchanged.
Number of erasers that Shiyun and Tammy had at first is equal.
5 u = 1 u + 68
5 u - 1 u = 68
4 u = 68
1 u = 68 ÷ 4= 17
Number of erasers that each of them had at first
= 1 u + 68
= 17 + 68
= 85
Answer(s): 85
