On Saturday, Risa, Rachel, Irene and Hazel spent a total of $113. On Sunday, Risa spent twice of what she spent on Saturday, Rachel spent the same as what she spent on Saturday, Irene spent $14 less than what she spent on Saturday, and Hazel spent $6 more than what she spent on Saturday. All of them spent an equal amount on Sunday. How much did Risa and Hazel spend altogether on Saturday?
|
Risa |
Rachel |
Irene |
Hazel |
Total |
Before |
1 u |
2 u |
2 u + $14 |
2 u - $6 |
$113 |
Change |
x 2 |
|
- $14 |
+ $6 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Saturday
= 1 u + 2 u + 2 u + 14 + 2 u - 6
= 7 u + 14 - 6
= 7 u + 8
7 u + 8 = 113
7 u = 113 - 8
7 u = 105
1 u = 105 ÷ 7 = 15
Total amount that Risa and Hazel spent on Saturday
= 1 u + 2 u - 6
= 3 u - 6
= 3 x 15 - 6
= 45 - 6
= $39
Answer(s): $39