Ivory and Barbara had equal amount of money. Each day, Ivory spent $11 and Barbara spent $14. When Ivory had $100 left, Barbara had
14 as much money left as Ivory. How much money did the two girls have at first?
| |
Ivory |
Barbara |
| Before |
11 u + 100 |
14 u + 25 |
| Change |
- 11 u |
- 14 u |
| After |
$100 |
$25 |
Amount that Barbara had left
=
14 x 100
= $25
The amount that Ivory and Barbara had at first is the same.
14 u + 25 = 11 u + 100
14 u - 11 u = 100 - 25
3 u = 75
1 u = 75 ÷ 3 = 25
Amount that Ivory had at first
= 11 u + 100
= 11 x 25 + 100
= 275 + 100
= $375
Total amount that both girls had at first
= 2 x 375
= $750
Answer(s): $750
