3 children have a total of $4780.
Bryan has $100 more than Adam.
Adam has 4 times as much as Charlie.
- How much does Bryan have?
- How much does Adam have?
- How much does Charlie have?
(a)
Choose the person with least money to be 1 u.
Amount that Charlie has = 1 u
Amount that Adam has = 4 u
Amount that Bryan has = 4 u + 100
Total amount that Bryan, Adam and Charlie
= 1 u + 4 u + 4 u + 100
= 9 u + 100
9 u + 100 = 4780
9 u = 4780 - 100 = 4680
9 u = 4680
1 u = 4680 ÷ 9 = 520
Amount that Bryan has
= 4 u + 100
= 4 x 520 + 100
= 2080 + 100
= $2180
(b)
Amount that Adam has
= 4 u
= $2080
(c)
Amount that Charlie has
= 1 u
= $520
Answer(s): (a) $2180; (b) $2080; (c) $520