On Friday, Kimberly, Natalie, Winnie and Sabrina spent a total of $92. On Saturday, Kimberly spent twice of what she spent on Friday, Natalie spent the same as what she spent on Friday, Winnie spent $14 less than what she spent on Friday, and Sabrina spent $6 more than what she spent on Friday. All of them spent an equal amount on Saturday. How much did Kimberly and Sabrina spend altogether on Friday?
|
Kimberly |
Natalie |
Winnie |
Sabrina |
Total |
Before |
1 u |
2 u |
2 u + $14 |
2 u - $6 |
$92 |
Change |
x 2 |
|
- $14 |
+ $6 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Friday
= 1 u + 2 u + 2 u + 14 + 2 u - 6
= 7 u + 14 - 6
= 7 u + 8
7 u + 8 = 92
7 u = 92 - 8
7 u = 84
1 u = 84 ÷ 7 = 12
Total amount that Kimberly and Sabrina spent on Friday
= 1 u + 2 u - 6
= 3 u - 6
= 3 x 12 - 6
= 36 - 6
= $30
Answer(s): $30