3 children have a total of $1640.
Bryan has $470 more than Adam.
Adam has 4 times as much as Charlie.
- How much does Bryan have?
- How much does Adam 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 Adam has = 4 u
Amount that Bryan has = 4 u + 470
Total amount that Bryan, Adam and Charlie
= 1 u + 4 u + 4 u + 470
= 9 u + 470
9 u + 470 = 1640
9 u = 1640 - 470 = 1170
9 u = 1170
1 u = 1170 ÷ 9 = 130
Amount that Bryan has
= 4 u + 470
= 4 x 130 + 470
= 520 + 470
= $990
(b)
Amount that Adam has
= 4 u
= $520
(c)
Amount that Charlie has
= 1 u
= $130
Answer(s): (a) $990; (b) $520; (c) $130