3 children have a total of $1280.
Adam has $230 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 + 230
Total amount that Adam, Bryan and Charlie
= 1 u + 2 u + 2 u + 230
= 5 u + 230
5 u + 230 = 1280
5 u = 1280 - 230 = 1050
5 u = 1050
1 u = 1050 ÷ 5 = 210
Amount that Adam has
= 2 u + 230
= 2 x 210 + 230
= 420 + 230
= $650
(b)
Amount that Bryan has
= 2 u
= $420
(c)
Amount that Charlie has
= 1 u
= $210
Answer(s): (a) $650; (b) $420; (c) $210