On Monday, Ivory, Nicole, Vanessa and Min spent a total of $169. On Tuesday, Ivory spent twice of what she spent on Monday, Nicole spent the same as what she spent on Monday, Vanessa spent $11 less than what she spent on Monday, and Min spent $2 more than what she spent on Monday. All of them spent an equal amount on Tuesday. How much did Ivory and Min spend altogether on Monday?
| |
Ivory |
Nicole |
Vanessa |
Min |
Total |
| Before |
1 u |
3 u |
3 u + $11 |
3 u - $2 |
$169 |
| Change |
x 3 |
|
- $11 |
+ $2 |
|
| After |
3 u |
3 u |
3 u |
3 u |
|
Total amount that the four girls spent on Monday
= 1 u + 3 u + 3 u + 11 + 3 u - 2
= 10 u + 11 - 2
= 10 u + 9
10 u + 9 = 169
10 u = 169 - 9
10 u = 160
1 u = 160 ÷ 10 = 16
Total amount that Ivory and Min spent on Monday
= 1 u + 3 u - 2
= 4 u - 2
= 4 x 16 - 2
= 64 - 2
= $62
Answer(s): $62
