On Saturday, Fiona, Lynn, Nora and Mary spent a total of $193. On Sunday, Fiona spent twice of what she spent on Saturday, Lynn spent the same as what she spent on Saturday, Nora spent $11 less than what she spent on Saturday, and Mary spent $8 more than what she spent on Saturday. All of them spent an equal amount on Sunday. How much did Fiona and Mary spend altogether on Saturday?
| |
Fiona |
Lynn |
Nora |
Mary |
Total |
| Before |
1 u |
3 u |
3 u + $11 |
3 u - $8 |
$193 |
| Change |
x 3 |
|
- $11 |
+ $8 |
|
| After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Saturday
= 1 u + 3 u + 3 u + 11 + 3 u - 8
= 10 u + 11 - 8
= 10 u + 3
10 u + 3 = 193
10 u = 193 - 3
10 u = 190
1 u = 190 ÷ 10 = 19
Total amount that Fiona and Mary spent on Saturday
= 1 u + 3 u - 8
= 4 u - 8
= 4 x 19 - 8
= 76 - 8
= $68
Answer(s): $68
