Adam and Charlie have the same amount of money.
Adam spends $60 and Charlie spends $70.
In the end, Adam has 6 times as much money as Charlie.
- How much does each of them have at first?
- How much does Adam have more than Charlie in the end?
|
Adam |
Charlie |
Before |
6 u + 60 |
1 u + 70 |
Change |
- 60 |
- 70 |
After |
6 u |
1 u |
(a)
At first
Amount that Adam has = Amount that Charlie has
6 u + 60 = 1 u + 70
6 u - 1 u = 70 - 60
5 u = 10
1 u = 10 ÷ 5 = 2
Amount that each of them has at first
= 1 u + 70
= 2 + 70
= $72
(b)
Amount that Adam has more than Charlie in the end
= 6 u - 1 u
= 5 u
= 5 x 2
= $10
Answer(s): (a) $72; (b) $10