Mark had $69.10 more than Dylan. After Dylan had spent
27 of his money, Mark had $87.30 more than Dylan. How much money did Mark have at first?
|
Mark |
Dylan |
More |
Before |
7 u + $69.10 |
7 u |
$69.10 |
Change |
|
- 2 u |
|
After |
7 u + $69.10 |
5 u |
2 u + $69.10 |
Mark had $87.30 more than Dylan in the end.
7 u + 69.10 - 5 u = 87.30
2 u + 69.10 = 87.30
2 u = 87.30 - 69.10
2 u = 18.20
1 u = 18.20 ÷ 2 = 9.10
Amount that Mark had at first
= 7 u + 69.10
= 7 x 9.10 + 69.10
= 63.70 + 69.10
= $132.80
Answer(s): $132.80