3 children have a total of $1390.
Charlie has $370 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 + 370
Total amount that Charlie, Adam and Bryan
= 1 u + 2 u + 2 u + 370
= 5 u + 370
5 u + 370 = 1390
5 u = 1390 - 370 = 1020
5 u = 1020
1 u = 1020 ÷ 5 = 204
Amount that Charlie has
= 2 u + 370
= 2 x 204 + 370
= 408 + 370
= $778
(b)
Amount that Adam has
= 2 u
= $408
(c)
Amount that Bryan has
= 1 u
= $204
Answer(s): (a) $778; (b) $408; (c) $204