Eric had $112 more than Billy. Every day, Eric would spend 5 times as much money as Billy. After 7 days, Eric and Billy were left with equal amount of money. How much did Eric spend every day?
| |
Eric |
Billy |
More |
| Before |
1 p + 5 u |
1 p + 1 u |
$112 |
| Change |
- 5 u |
- 1 u |
|
| After |
1 p |
1 p |
|
Amount that Eric spent more than Billy
= 5 u - 1 u
= 4 u
4 u = 112
1 u = 112 ÷ 4 = 28
Amount that Eric spent in 7 days
= 5 u
= 5 x 28
= $140
Amount that Eric spent every day
= 140 ÷ 7
= $20
Answer(s): $20
