3 children have a total of $2390.
Charlie has $390 more than Adam.
Adam has 2 times as much as Bryan.
- How much does Charlie have?
- How much does Adam have?
- How much does Bryan have?
(a)
Choose the person with least money to be 1 u.
Amount that Bryan has = 1 u
Amount that Adam has = 2 u
Amount that Charlie has = 2 u + 390
Total amount that Charlie, Adam and Bryan
= 1 u + 2 u + 2 u + 390
= 5 u + 390
5 u + 390 = 2390
5 u = 2390 - 390 = 2000
5 u = 2000
1 u = 2000 ÷ 5 = 400
Amount that Charlie has
= 2 u + 390
= 2 x 400 + 390
= 800 + 390
= $1190
(b)
Amount that Adam has
= 2 u
= $800
(c)
Amount that Bryan has
= 1 u
= $400
Answer(s): (a) $1190; (b) $800; (c) $400