Jaslyn and Tammy went shopping. After Jaslyn spent $72
f, Tammy had 3 times as much as Jaslyn. If Jaslyn had $23
f more than Tammy at first,
- Express the amount of money that Jaslyn had at first in terms of f.
- If f = 28, find the amount of money that the two women had left after shopping.
|
Jaslyn |
Tammy |
Before |
1 u + $72f |
3 u |
Change |
- $72f |
|
After |
1 u |
3 u |
(a)
1 u + 72
f = 3 u + 23
f3 u - 1 u = 72
f - 23
f2 u = 72
f - 23
f = 49
f1 u = 49
f ÷ 2 = 24.5
f Jaslyn's amount at first
= 1 u + 72
f = 24.5
f + 72
f = $96.5
f (b)
1 u + 3 u = 4 u
4 u = 4 x 24.5
f = 98
f Amount the two women had left
= 98 x 28
= $2744
Answer(s): (a) $96.5
f; (b) $2744