Irene and Min had equal amount of money. Each day, Irene spent $20 and Min spent $22. When Irene had $110 left, Min had
611 as much money left as Irene. How much money did the two girls have at first?
| |
Irene |
Min |
| Before |
20 u + 110 |
22 u + 60 |
| Change |
- 20 u |
- 22 u |
| After |
$110 |
$60 |
Amount that Min had left
=
611 x 110
= $60
The amount that Irene and Min had at first is the same.
22 u + 60 = 20 u + 110
22 u - 20 u = 110 - 60
2 u = 50
1 u = 50 ÷ 2 = 25
Amount that Irene had at first
= 20 u + 110
= 20 x 25 + 110
= 500 + 110
= $610
Total amount that both girls had at first
= 2 x 610
= $1220
Answer(s): $1220
