Lucy had $18 more than Hilda at first. After Lucy and Hilda spent an equal amount of money, Hilda had
35 as much as Lucy. How much money did Lucy have left?
| |
Lucy |
Hilda |
Difference |
| Before |
1 u + $18 |
1 u |
$18 |
| Change |
- 1 |
- 1 |
|
| After |
5 p |
3 p |
2 p |
Difference in the amounts between Lucy and Hilda
= 5 p - 3 p
= 2 p
Since both Lucy and Hilda spent an equal amount, the difference in the amounts that Lucy and Hilda had at first and in the end remains unchanged.
2 p = 18
1 p = 18 ÷ 2 = 9
Amount that Lucy had left
= 5 p
= 5 x 9
= $45
Answer(s): $45
