Julie and Tammy had $50 at first. Julie spent
58 of her money and Tammy spent
45 of her money. Given that they had $94 left, how much did Julie have at first?
|
Julie |
Tammy |
Total |
Before |
8 u |
5 p |
$50 |
Change |
- 5 u |
- 4 p |
|
After |
3 u |
1 p |
$94 |
8 u + 5 p = 50 --- (1)
3 u + 1 p = 94 --- (2)
(2) x 5 15 u + 5 p = 470 --- (3)
(3) - (1)
15 u - 8 u = 470 - 50
7 u = 420
1 u = 420 ÷ 7 = 60
Amount that Julie had at first
= 8 u
= 8 x 60
= $480
Answer(s): $480