Shiyun and Winnie went shopping. After Shiyun spent $76
j, Winnie had 5 times as much as Shiyun. If Shiyun had $28
j more than Winnie at first,
- Express the amount of money that Shiyun had at first in terms of j.
- If j = 34, find the amount of money that the two lady had left after shopping.
|
Shiyun |
Winnie |
Before |
1 u + $76j |
5 u |
Change |
- $76j |
|
After |
1 u |
5 u |
(a)
1 u + 76
j = 5 u + 28
j5 u - 1 u = 76
j - 28
j4 u = 76
j - 28
j = 48
j1 u = 48
j ÷ 4 = 12
j Shiyun's amount at first
= 1 u + 76
j = 12
j + 76
j = $88
j (b)
1 u + 5 u = 6 u
6 u = 6 x 12
j = 72
j Amount the two lady had left
= 72 x 34
= $2448
Answer(s): (a) $88
j; (b) $2448