On Thursday, Penelope, Jane, Linda and Jen spent a total of $188. On Friday, Penelope spent twice of what she spent on Thursday, Jane spent the same as what she spent on Thursday, Linda spent $12 less than what she spent on Thursday, and Jen spent $4 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Penelope and Jen spend altogether on Thursday?
| |
Penelope |
Jane |
Linda |
Jen |
Total |
| Before |
1 u |
3 u |
3 u + $12 |
3 u - $4 |
$188 |
| Change |
x 3 |
|
- $12 |
+ $4 |
|
| After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Thursday
= 1 u + 3 u + 3 u + 12 + 3 u - 4
= 10 u + 12 - 4
= 10 u + 8
10 u + 8 = 188
10 u = 188 - 8
10 u = 180
1 u = 180 ÷ 10 = 18
Total amount that Penelope and Jen spent on Thursday
= 1 u + 3 u - 4
= 4 u - 4
= 4 x 18 - 4
= 72 - 4
= $68
Answer(s): $68
