On Saturday, Tammy, Tiffany, Kylie and Emily spent a total of $104. On Sunday, Tammy spent twice of what she spent on Saturday, Tiffany spent the same as what she spent on Saturday, Kylie spent $18 less than what she spent on Saturday, and Emily spent $5 more than what she spent on Saturday. All of them spent an equal amount on Sunday. How much did Tammy and Emily spend altogether on Saturday?
|
Tammy |
Tiffany |
Kylie |
Emily |
Total |
Before |
1 u |
2 u |
2 u + $18 |
2 u - $5 |
$104 |
Change |
x 2 |
|
- $18 |
+ $5 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Saturday
= 1 u + 2 u + 2 u + 18 + 2 u - 5
= 7 u + 18 - 5
= 7 u + 13
7 u + 13 = 104
7 u = 104 - 13
7 u = 91
1 u = 91 ÷ 7 = 13
Total amount that Tammy and Emily spent on Saturday
= 1 u + 2 u - 5
= 3 u - 5
= 3 x 13 - 5
= 39 - 5
= $34
Answer(s): $34