Bryan and Charlie have the same amount of money.
Bryan spends $70 and Charlie spends $100.
In the end, Bryan has 4 times as much money as Charlie.
- How much does each of them have at first?
- How much does Bryan have more than Charlie in the end?
|
Bryan |
Charlie |
Before |
4 u + 70 |
1 u + 100 |
Change |
- 70 |
- 100 |
After |
4 u |
1 u |
(a)
At first
Amount that Bryan has = Amount that Charlie has
4 u + 70 = 1 u + 100
4 u - 1 u = 100 - 70
3 u = 30
1 u = 30 ÷ 3 = 10
Amount that each of them has at first
= 1 u + 100
= 10 + 100
= $110
(b)
Amount that Bryan has more than Charlie in the end
= 4 u - 1 u
= 3 u
= 3 x 10
= $30
Answer(s): (a) $110; (b) $30