David had $144 more than Carl. Every day, David would spend 5 times as much money as Carl. After 6 days, David and Carl were left with equal amount of money. How much did David spend every day?
| |
David |
Carl |
More |
| Before |
1 p + 5 u |
1 p + 1 u |
$144 |
| Change |
- 5 u |
- 1 u |
|
| After |
1 p |
1 p |
|
Amount that David spent more than Carl
= 5 u - 1 u
= 4 u
4 u = 144
1 u = 144 ÷ 4 = 36
Amount that David spent in 6 days
= 5 u
= 5 x 36
= $180
Amount that David spent every day
= 180 ÷ 6
= $30
Answer(s): $30
