Irene and Diana had equal amount of money. Each day, Irene spent $11 and Diana spent $16. When Irene had $80 left, Diana had
14 as much money left as Irene. How much money did the two girls have at first?
| |
Irene |
Diana |
| Before |
11 u + 80 |
16 u + 20 |
| Change |
- 11 u |
- 16 u |
| After |
$80 |
$20 |
Amount that Diana had left
=
14 x 80
= $20
The amount that Irene and Diana had at first is the same.
16 u + 20 = 11 u + 80
16 u - 11 u = 80 - 20
5 u = 60
1 u = 60 ÷ 5 = 12
Amount that Irene had at first
= 11 u + 80
= 11 x 12 + 80
= 132 + 80
= $212
Total amount that both girls had at first
= 2 x 212
= $424
Answer(s): $424
