Linda and Joelle had $93 at first. Linda spent
47 of her money and Joelle spent
56 of her money. Given that they had $43 left, how much did Linda have at first?
|
Linda |
Joelle |
Total |
Before |
7 u |
6 p |
$93 |
Change |
- 4 u |
- 5 p |
|
After |
3 u |
1 p |
$43 |
7 u + 6 p = 93 --- (1)
3 u + 1 p = 43 --- (2)
(2) x 6 18 u + 6 p = 258 --- (3)
(3) - (1)
18 u - 7 u = 258 - 93
11 u = 165
1 u = 165 ÷ 11 = 15
Amount that Linda had at first
= 7 u
= 7 x 15
= $105
Answer(s): $105