On Wednesday, Min, Emma, Ivory and Winnie spent a total of $184. On Thursday, Min spent twice of what she spent on Wednesday, Emma spent the same as what she spent on Wednesday, Ivory spent $13 less than what she spent on Wednesday, and Winnie spent $9 more than what she spent on Wednesday. All of them spent an equal amount on Thursday. How much did Min and Winnie spend altogether on Wednesday?
|
Min |
Emma |
Ivory |
Winnie |
Total |
Before |
1 u |
3 u |
3 u + $13 |
3 u - $9 |
$184 |
Change |
x 3 |
|
- $13 |
+ $9 |
|
After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Wednesday
= 1 u + 3 u + 3 u + 13 + 3 u - 9
= 10 u + 13 - 9
= 10 u + 4
10 u + 4 = 184
10 u = 184 - 4
10 u = 180
1 u = 180 ÷ 10 = 18
Total amount that Min and Winnie spent on Wednesday
= 1 u + 3 u - 9
= 4 u - 9
= 4 x 18 - 9
= 72 - 9
= $63
Answer(s): $63