Shiyun and Roshel went shopping. After Shiyun spent $56
v, Roshel had 3 times as much as Shiyun. If Shiyun had $29
v more than Roshel at first,
- Express the amount of money that Shiyun had at first in terms of v.
- If v = 31, find the amount of money that the two lady had left after shopping.
|
Shiyun |
Roshel |
Before |
1 u + $56v |
3 u |
Change |
- $56v |
|
After |
1 u |
3 u |
(a)
1 u + 56
v = 3 u + 29
v3 u - 1 u = 56
v - 29
v2 u = 56
v - 29
v = 27
v1 u = 27
v ÷ 2 = 13.5
v Shiyun's amount at first
= 1 u + 56
v = 13.5
v + 56
v = $69.5
v (b)
1 u + 3 u = 4 u
4 u = 4 x 13.5
v = 54
v Amount the two lady had left
= 54 x 31
= $1674
Answer(s): (a) $69.5
v; (b) $1674