Charlie and Bryan have the same amount of money.
Charlie spends $30 and Bryan spends $60.
In the end, Charlie has 7 times as much money as Bryan.
- How much does each of them have at first?
- How much does Charlie have more than Bryan in the end?
|
Charlie |
Bryan |
Before |
7 u + 30 |
1 u + 60 |
Change |
- 30 |
- 60 |
After |
7 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Bryan has
7 u + 30 = 1 u + 60
7 u - 1 u = 60 - 30
6 u = 30
1 u = 30 ÷ 6 = 5
Amount that each of them has at first
= 1 u + 60
= 5 + 60
= $65
(b)
Amount that Charlie has more than Bryan in the end
= 7 u - 1 u
= 6 u
= 6 x 5
= $30
Answer(s): (a) $65; (b) $30