Jaslyn and Irene went shopping. After Jaslyn spent $68
b, Irene had 4 times as much as Jaslyn. If Jaslyn had $26
b more than Irene at first,
- Express the amount of money that Jaslyn had at first in terms of b.
- If b = 15, find the amount of money that the two lady had left after shopping.
|
Jaslyn |
Irene |
Before |
1 u + $68b |
4 u |
Change |
- $68b |
|
After |
1 u |
4 u |
(a)
1 u + 68
b = 4 u + 26
b4 u - 1 u = 68
b - 26
b3 u = 68
b - 26
b = 42
b1 u = 42
b ÷ 3 = 14
b Jaslyn's amount at first
= 1 u + 68
b = 14
b + 68
b = $82
b (b)
1 u + 4 u = 5 u
5 u = 5 x 14
b = 70
b Amount the two lady had left
= 70 x 15
= $1050
Answer(s): (a) $82
b; (b) $1050