Charlie and Adam have the same amount of money.
Charlie spends $80 and Adam spends $90.
In the end, Charlie has 6 times as much money as Adam.
- How much does each of them have at first?
- How much does Charlie have more than Adam in the end?
|
Charlie |
Adam |
Before |
6 u + 80 |
1 u + 90 |
Change |
- 80 |
- 90 |
After |
6 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Adam has
6 u + 80 = 1 u + 90
6 u - 1 u = 90 - 80
5 u = 10
1 u = 10 ÷ 5 = 2
Amount that each of them has at first
= 1 u + 90
= 2 + 90
= $92
(b)
Amount that Charlie has more than Adam in the end
= 6 u - 1 u
= 5 u
= 5 x 2
= $10
Answer(s): (a) $92; (b) $10