Perry had five times as much money as Cole. After Perry had spent $112, Cole had thrice as much money as Perry. How much more money than Cole had Perry at first?
| |
Perry |
Cole |
More |
Before
|
5x3 =
15 u |
1x3 =
3 u |
12 u |
| Change |
- $112 |
|
|
| After |
1 u |
3 u |
|
The amount that Cole had remains unchanged. Make the amount that Cole had the same. LCM of 1 and 3 is 3.
Amount that Mark had in the end = 1 u
15 u - 112 = 1 u
15 u - 1 u = 112
14 u = 112
1 u = 112 ÷ 14 = 8
Amount that Cole had more than Perry at first
= 15 u - 3 u
= 12 u
= 12 x 8
= $96
Answer(s): $96
