Adam and Bryan have the same amount of money.
Adam spends $40 and Bryan spends $100.
In the end, Adam has 4 times as much money as Bryan.
- How much does each of them have at first?
- How much does Bryan have less than Adam in the end?
|
Adam |
Bryan |
Before |
4 u + 40 |
1 u + 100 |
Change |
- 40 |
- 100 |
After |
4 u |
1 u |
(a)
At first
Amount that Adam has = Amount that Bryan has
4 u + 40 = 1 u + 100
4 u - 1 u = 100 - 40
3 u = 60
1 u = 60 ÷ 3 = 20
Amount that each of them has at first
= 1 u + 100
= 20 + 100
= $120
(b)
Amount that Bryan has less than Adam in the end
= 4 u - 1 u
= 3 u
= 3 x 20
= $60
Answer(s): (a) $120; (b) $60