On Thursday, Raeann, Rachel, Roshel and Opal spent a total of $74. On Friday, Raeann spent twice of what she spent on Thursday, Rachel spent the same as what she spent on Thursday, Roshel spent $16 less than what she spent on Thursday, and Opal spent $12 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Raeann and Opal spend altogether on Thursday?
|
Raeann |
Rachel |
Roshel |
Opal |
Total |
Before |
1 u |
2 u |
2 u + $16 |
2 u - $12 |
$74 |
Change |
x 2 |
|
- $16 |
+ $12 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Thursday
= 1 u + 2 u + 2 u + 16 + 2 u - 12
= 7 u + 16 - 12
= 7 u + 4
7 u + 4 = 74
7 u = 74 - 4
7 u = 70
1 u = 70 ÷ 7 = 10
Total amount that Raeann and Opal spent on Thursday
= 1 u + 2 u - 12
= 3 u - 12
= 3 x 10 - 12
= 30 - 12
= $18
Answer(s): $18