Gillian and Jane had $47 at first. Gillian spent
58 of her money and Jane spent
45 of her money. Given that they had $36 left, how much did Gillian have at first?
|
Gillian |
Jane |
Total |
Before |
8 u |
5 p |
$47 |
Change |
- 5 u |
- 4 p |
|
After |
3 u |
1 p |
$36 |
8 u + 5 p = 47 --- (1)
3 u + 1 p = 36 --- (2)
(2) x 5 15 u + 5 p = 180 --- (3)
(3) - (1)
15 u - 8 u = 180 - 47
7 u = 133
1 u = 133 ÷ 7 = 19
Amount that Gillian had at first
= 8 u
= 8 x 19
= $152
Answer(s): $152