Ben had $9.20 less than Bobby. After Ben gave $3.60 to Bobby, Bobby would have five times as much money as Ben. How much money had Bobby at first?
| |
Bobby |
Ben |
| Before |
5 u - $3.60 |
1 u + $3.60 |
| Change |
+ $3.60 |
- $3.60 |
| After |
5 u |
1 u |
Ben had $9.20 less than Bobby. If another $9.20 was given to Ben, Bobby and Ben would have the same amount at first.
5 u - 3.60 = 1 u + 3.60 + 9.20
5 u - 1 u = 3.60 + 9.20 + 3.60
4 u = 16.40
1 u = 16.40 ÷ 4 = 4.10
Amount that Bobby had at first
= 5 u - 3.60
= 5 x 4.10 + 3.60
= 20.50 + 3.60
= $24.10
Answer(s): $24.10
