Adam and Beck have the same amount of money.
Adam receives $70 and Beck receives $10.
In the end, Adam has 4 times as much money as Beck.
- How much does each of them have at first?
- How much does Beck have less than Adam in the end?
|
Adam |
Beck |
Before |
4 u - 70 |
1 u - 10 |
Change |
+ 70 |
+ 10 |
After |
4 u |
1 u |
(a)
At first
Amount that Adam has = Amount that Beck has
4 u - 70 = 1 u - 10
4 u - 1 u = 70 - 10
3 u = 60
1 u = 60 ÷ 3 = 20
Amount that each of them has at first
= 1 u - 10
= 20 - 10
= $10
(b)
Amount that Beck has less than Adam in the end
= 4 u - 1 u
= 3 u
= 3 x 20
= $60
Answer(s): (a) $10; (b) $60