Mark had $59.20 more than Glen. After Glen had spent
79 of his money, Mark had $192.90 more than Glen. How much money did Mark have at first?
| |
Mark |
Glen |
More |
| Before |
9 u + $59.20 |
9 u |
$59.20 |
| Change |
|
- 7 u |
|
| After |
9 u + $59.20 |
2 u |
7 u + $59.20 |
Mark had $192.90 more than Glen in the end.
9 u + 59.20 - 2 u = 192.90
7 u + 59.20 = 192.90
7 u = 192.90 - 59.20
7 u = 133.70
1 u = 133.70 ÷ 7 = 19.10
Amount that Mark had at first
= 9 u + 59.20
= 9 x 19.10 + 59.20
= 171.90 + 59.20
= $231.10
Answer(s): $231.10
