On Friday, Elyse, Dana, Xuan and Zara spent a total of $115. On Saturday, Elyse spent twice of what she spent on Friday, Dana spent the same as what she spent on Friday, Xuan spent $8 less than what she spent on Friday, and Zara spent $3 more than what she spent on Friday. All of them spent an equal amount on Saturday. How much did Elyse and Zara spend altogether on Friday?
| |
Elyse |
Dana |
Xuan |
Zara |
Total |
| Before |
1 u |
3 u |
3 u + $8 |
3 u - $3 |
$115 |
| Change |
x 3 |
|
- $8 |
+ $3 |
|
| After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Friday
= 1 u + 3 u + 3 u + 8 + 3 u - 3
= 10 u + 8 - 3
= 10 u + 5
10 u + 5 = 115
10 u = 115 - 5
10 u = 110
1 u = 110 ÷ 10 = 11
Total amount that Elyse and Zara spent on Friday
= 1 u + 3 u - 3
= 4 u - 3
= 4 x 11 - 3
= 44 - 3
= $41
Answer(s): $41
