Charlie and Bryan have the same amount of money.
Charlie spends $10 and Bryan spends $40.
In the end, Charlie has 7 times as much money as Bryan.
- How much does each of them have at first?
- How much does Bryan have less than Charlie in the end?
|
Charlie |
Bryan |
Before |
7 u + 10 |
1 u + 40 |
Change |
- 10 |
- 40 |
After |
7 u |
1 u |
(a)
At first
Amount that Charlie has = Amount that Bryan has
7 u + 10 = 1 u + 40
7 u - 1 u = 40 - 10
6 u = 30
1 u = 30 ÷ 6 = 5
Amount that each of them has at first
= 1 u + 40
= 5 + 40
= $45
(b)
Amount that Bryan has less than Charlie in the end
= 7 u - 1 u
= 6 u
= 6 x 5
= $30
Answer(s): (a) $45; (b) $30