3 children have a total of $4020.
Bryan has $320 more than Charlie.
Charlie has 2 times as much as Adam.
- How much does Bryan have?
- How much does Charlie have?
- How much does Adam have?
(a)
Choose the person with least money to be 1 u.
Amount that Adam has = 1 u
Amount that Charlie has = 2 u
Amount that Bryan has = 2 u + 320
Total amount that Bryan, Charlie and Adam
= 1 u + 2 u + 2 u + 320
= 5 u + 320
5 u + 320 = 4020
5 u = 4020 - 320 = 3700
5 u = 3700
1 u = 3700 ÷ 5 = 740
Amount that Bryan has
= 2 u + 320
= 2 x 740 + 320
= 1480 + 320
= $1800
(b)
Amount that Charlie has
= 2 u
= $1480
(c)
Amount that Adam has
= 1 u
= $740
Answer(s): (a) $1800; (b) $1480; (c) $740