Charlie and Adam have the same amount of money.
Charlie spends $80 and Adam spends $100.
In the end, Charlie has 6 times as much money as Adam.
- How much does each of them have at first?
- How much does Adam have less than Charlie in the end?
|
Charlie |
Adam |
Before |
6 u + 80 |
1 u + 100 |
Change |
- 80 |
- 100 |
After |
6 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Adam has
6 u + 80 = 1 u + 100
6 u - 1 u = 100 - 80
5 u = 20
1 u = 20 ÷ 5 = 4
Amount that each of them has at first
= 1 u + 100
= 4 + 100
= $104
(b)
Amount that Adam has less than Charlie in the end
= 6 u - 1 u
= 5 u
= 5 x 4
= $20
Answer(s): (a) $104; (b) $20