Julie and Xandra went shopping. After Julie spent $85
p, Xandra had 4 times as much as Julie. If Julie had $22
p more than Xandra at first,
- Express the amount of money that Julie had at first in terms of p.
- If p = 19, find the amount of money that the two lady had left after shopping.
|
Julie |
Xandra |
Before |
1 u + $85p |
4 u |
Change |
- $85p |
|
After |
1 u |
4 u |
(a)
1 u + 85
p = 4 u + 22
p4 u - 1 u = 85
p - 22
p3 u = 85
p - 22
p = 63
p1 u = 63
p ÷ 3 = 21
p Julie's amount at first
= 1 u + 85
p = 21
p + 85
p = $106
p (b)
1 u + 4 u = 5 u
5 u = 5 x 21
p = 105
p Amount the two lady had left
= 105 x 19
= $1995
Answer(s): (a) $106
p; (b) $1995