Bryan and Adam have the same amount of money.
Bryan spends $30 and Adam spends $70.
In the end, Bryan has 5 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 |
5 u + 30 |
1 u + 70 |
Change |
- 30 |
- 70 |
After |
5 u |
1 u |
(a)
At first
Amount that Bryan has = Amount that Adam has
5 u + 30 = 1 u + 70
5 u - 1 u = 70 - 30
4 u = 40
1 u = 40 ÷ 4 = 10
Amount that each of them has at first
= 1 u + 70
= 10 + 70
= $80
(b)
Amount that Bryan has more than Adam in the end
= 5 u - 1 u
= 4 u
= 4 x 10
= $40
Answer(s): (a) $80; (b) $40