Jade and Nora had the same number of coins. After Jade had given away 80 coins, Nora had 9 times as many coins as Jade. How many coins did each of them have at first?
| |
Jade |
Nora |
| Before |
1 u + 80 |
9 u |
| Change |
- 80 |
|
| After |
1 u |
9 u |
Number of coins that Nora had remains unchanged.
Number of coins that Jade and Nora had at first is equal.
9 u = 1 u + 80
9 u - 1 u = 80
8 u = 80
1 u = 80 ÷ 8= 10
Number of coins that each of them had at first
= 1 u + 80
= 10 + 80
= 90
Answer(s): 90
