Betty and Lynn went on a tour together. Betty brought five times as much money as Lynn. After Betty had spent $680 and Lynn had spent $120, they had an equal amount of money left. How much money did each of them have at first?
- Lynn
- Betty
|
Betty |
Lynn |
Before |
5 u |
1 u |
Change |
- $680 |
- $120 |
After |
5 u - $680 |
1 u - $120 |
(a)
The amounts that Betty and Lynn had in the end are the same.
5 u - 680 = 1 u - 120
5 u - 1 u = 680 - 120
4 u = 560
1 u = 560 ÷ 4 = 140
Amount that Lynn had at first
= 1 u
= $140
(b)
Amount that Betty had at first
= 5 u
= 5 x 140
= $700
Answer(s): (a) $140, (b) $700