On Tuesday, Yoko, Lucy, Rachel and Kylie spent a total of $116. On Wednesday, Yoko spent twice of what she spent on Tuesday, Lucy spent the same as what she spent on Tuesday, Rachel spent $9 less than what she spent on Tuesday, and Kylie spent $3 more than what she spent on Tuesday. All of them spent an equal amount on Wednesday. How much did Yoko and Kylie spend altogether on Tuesday?
|
Yoko |
Lucy |
Rachel |
Kylie |
Total |
Before |
1 u |
3 u |
3 u + $9 |
3 u - $3 |
$116 |
Change |
x 3 |
|
- $9 |
+ $3 |
|
After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Tuesday
= 1 u + 3 u + 3 u + 9 + 3 u - 3
= 10 u + 9 - 3
= 10 u + 6
10 u + 6 = 116
10 u = 116 - 6
10 u = 110
1 u = 110 ÷ 10 = 11
Total amount that Yoko and Kylie spent on Tuesday
= 1 u + 3 u - 3
= 4 u - 3
= 4 x 11 - 3
= 44 - 3
= $41
Answer(s): $41