Esther and Rachel had the same number of coins. After Esther had given away 70 coins, Rachel had 8 times as many coins as Esther. How many coins did each of them have at first?
| |
Esther |
Rachel |
| Before |
1 u + 70 |
8 u |
| Change |
- 70 |
|
| After |
1 u |
8 u |
Number of coins that Rachel had remains unchanged.
Number of coins that Esther and Rachel had at first is equal.
8 u = 1 u + 70
8 u - 1 u = 70
7 u = 70
1 u = 70 ÷ 7= 10
Number of coins that each of them had at first
= 1 u + 70
= 10 + 70
= 80
Answer(s): 80
