Xuan and Irene went shopping. After Xuan spent $76
h, Irene had 3 times as much as Xuan. If Xuan had $29
h more than Irene at first,
- Express the amount of money that Xuan had at first in terms of h.
- If h = 35, find the amount of money that the two lady had left after shopping.
|
Xuan |
Irene |
Before |
1 u + $76h |
3 u |
Change |
- $76h |
|
After |
1 u |
3 u |
(a)
1 u + 76
h = 3 u + 29
h3 u - 1 u = 76
h - 29
h2 u = 76
h - 29
h = 47
h1 u = 47
h ÷ 2 = 23.5
h Xuan's amount at first
= 1 u + 76
h = 23.5
h + 76
h = $99.5
h (b)
1 u + 3 u = 4 u
4 u = 4 x 23.5
h = 94
h Amount the two lady had left
= 94 x 35
= $3290
Answer(s): (a) $99.5
h; (b) $3290