Shiyun and Gem had $92 at first. Shiyun spent
58 of her money and Gem spent
34 of her money. Given that they had $91 left, how much did Shiyun have at first?
|
Shiyun |
Gem |
Total |
Before |
8 u |
4 p |
$92 |
Change |
- 5 u |
- 3 p |
|
After |
3 u |
1 p |
$91 |
8 u + 4 p = 92 --- (1)
3 u + 1 p = 91 --- (2)
(2) x 4 12 u + 4 p = 364 --- (3)
(3) - (1)
12 u - 8 u = 364 - 92
4 u = 272
1 u = 272 ÷ 4 = 68
Amount that Shiyun had at first
= 8 u
= 8 x 68
= $544
Answer(s): $544