Sabrina and Vanessa went shopping. After Sabrina spent $67
f, Vanessa had 3 times as much as Sabrina. If Sabrina had $24
f more than Vanessa at first,
- Express the amount of money that Sabrina had at first in terms of f.
- If f = 35, find the amount of money that the two lady had left after shopping.
|
Sabrina |
Vanessa |
Before |
1 u + $67f |
3 u |
Change |
- $67f |
|
After |
1 u |
3 u |
(a)
1 u + 67
f = 3 u + 24
f3 u - 1 u = 67
f - 24
f2 u = 67
f - 24
f = 43
f1 u = 43
f ÷ 2 = 21.5
f Sabrina's amount at first
= 1 u + 67
f = 21.5
f + 67
f = $88.5
f (b)
1 u + 3 u = 4 u
4 u = 4 x 21.5
f = 86
f Amount the two lady had left
= 86 x 35
= $3010
Answer(s): (a) $88.5
f; (b) $3010