3 children have a total of $4700.
Adam has $390 more than Bryan.
Bryan has 2 times as much as Charlie.
- How much does Adam have?
- How much does Bryan 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 Bryan has = 2 u
Amount that Adam has = 2 u + 390
Total amount that Adam, Bryan and Charlie
= 1 u + 2 u + 2 u + 390
= 5 u + 390
5 u + 390 = 4700
5 u = 4700 - 390 = 4310
5 u = 4310
1 u = 4310 ÷ 5 = 862
Amount that Adam has
= 2 u + 390
= 2 x 862 + 390
= 1724 + 390
= $2114
(b)
Amount that Bryan has
= 2 u
= $1724
(c)
Amount that Charlie has
= 1 u
= $862
Answer(s): (a) $2114; (b) $1724; (c) $862