On Wednesday, Kathy, Julie, Tammy and Anna spent a total of $92. On Thursday, Kathy spent twice of what she spent on Wednesday, Julie spent the same as what she spent on Wednesday, Tammy spent $11 less than what she spent on Wednesday, and Anna spent $3 more than what she spent on Wednesday. All of them spent an equal amount on Thursday. How much did Kathy and Anna spend altogether on Wednesday?
|
Kathy |
Julie |
Tammy |
Anna |
Total |
Before |
1 u |
2 u |
2 u + $11 |
2 u - $3 |
$92 |
Change |
x 2 |
|
- $11 |
+ $3 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Wednesday
= 1 u + 2 u + 2 u + 11 + 2 u - 3
= 7 u + 11 - 3
= 7 u + 8
7 u + 8 = 92
7 u = 92 - 8
7 u = 84
1 u = 84 ÷ 7 = 12
Total amount that Kathy and Anna spent on Wednesday
= 1 u + 2 u - 3
= 3 u - 3
= 3 x 12 - 3
= 36 - 3
= $33
Answer(s): $33