Bryan and Adam have the same amount of money.
Bryan spends $20 and Adam spends $80.
In the end, Bryan has 4 times as much money as Adam.
- How much does each of them have at first?
- How much does Bryan have more than Adam in the end?
|
Bryan |
Adam |
Before |
4 u + 20 |
1 u + 80 |
Change |
- 20 |
- 80 |
After |
4 u |
1 u |
(a)
At first
Amount that Bryan has = Amount that Adam has
4 u + 20 = 1 u + 80
4 u - 1 u = 80 - 20
3 u = 60
1 u = 60 ÷ 3 = 20
Amount that each of them has at first
= 1 u + 80
= 20 + 80
= $100
(b)
Amount that Bryan has more than Adam in the end
= 4 u - 1 u
= 3 u
= 3 x 20
= $60
Answer(s): (a) $100; (b) $60