Bryan and Adam have the same amount of money.
Bryan spends $30 and Adam spends $80.
In the end, Bryan has 3 times as much money as Adam.
- How much does each of them have at first?
- How much does Adam have less than Bryan in the end?
|
Bryan |
Adam |
Before |
3 u + 30 |
1 u + 80 |
Change |
- 30 |
- 80 |
After |
3 u |
1 u |
(a)
At first
Amount that Bryan has = Amount that Adam has
3 u + 30 = 1 u + 80
3 u - 1 u = 80 - 30
2 u = 50
1 u = 50 ÷ 2 = 25
Amount that each of them has at first
= 1 u + 80
= 25 + 80
= $105
(b)
Amount that Adam has less than Bryan in the end
= 3 u - 1 u
= 2 u
= 2 x 25
= $50
Answer(s): (a) $105; (b) $50