3 children have a total of $3190.
Charlie has $390 more than Adam.
Adam has 3 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 = 3 u
Amount that Charlie has = 3 u + 390
Total amount that Charlie, Adam and Bryan
= 1 u + 3 u + 3 u + 390
= 7 u + 390
7 u + 390 = 3190
7 u = 3190 - 390 = 2800
7 u = 2800
1 u = 2800 ÷ 7 = 400
Amount that Charlie has
= 3 u + 390
= 3 x 400 + 390
= 1200 + 390
= $1590
(b)
Amount that Adam has
= 3 u
= $1200
(c)
Amount that Bryan has
= 1 u
= $400
Answer(s): (a) $1590; (b) $1200; (c) $400