Adam and Charlie have the same amount of money.
Adam spends $50 and Charlie spends $60.
In the end, Adam has 3 times as much money as Charlie.
- How much does each of them have at first?
- How much does Charlie have less than Adam in the end?
|
Adam |
Charlie |
Before |
3 u + 50 |
1 u + 60 |
Change |
- 50 |
- 60 |
After |
3 u |
1 u |
(a)
At first
Amount that Adam has = Amount that Charlie has
3 u + 50 = 1 u + 60
3 u - 1 u = 60 - 50
2 u = 10
1 u = 10 ÷ 2 = 5
Amount that each of them has at first
= 1 u + 60
= 5 + 60
= $65
(b)
Amount that Charlie has less than Adam in the end
= 3 u - 1 u
= 2 u
= 2 x 5
= $10
Answer(s): (a) $65; (b) $10