Mark had $144 more than Archie. Every day, Mark would spend 3 times as much money as Archie. After 4 days, Mark and Archie were left with equal amount of money. How much did Mark spend every day?
| |
Mark |
Archie |
More |
| Before |
1 p + 3 u |
1 p + 1 u |
$144 |
| Change |
- 3 u |
- 1 u |
|
| After |
1 p |
1 p |
|
Amount that Mark spent more than Archie
= 3 u - 1 u
= 2 u
2 u = 144
1 u = 144 ÷ 2 = 72
Amount that Mark spent in 4 days
= 3 u
= 3 x 72
= $216
Amount that Mark spent every day
= 216 ÷ 4
= $54
Answer(s): $54
