Charlie and Adam have the same amount of money.
Charlie spends $40 and Adam spends $100.
In the end, Charlie has 5 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 |
5 u + 40 |
1 u + 100 |
Change |
- 40 |
- 100 |
After |
5 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Adam has
5 u + 40 = 1 u + 100
5 u - 1 u = 100 - 40
4 u = 60
1 u = 60 ÷ 4 = 15
Amount that each of them has at first
= 1 u + 100
= 15 + 100
= $115
(b)
Amount that Charlie has more than Adam in the end
= 5 u - 1 u
= 4 u
= 4 x 15
= $60
Answer(s): (a) $115; (b) $60