3 children have a total of $4220.
Bryan has $130 more than Adam.
Adam has 2 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 = 2 u
Amount that Bryan has = 2 u + 130
Total amount that Bryan, Adam and Charlie
= 1 u + 2 u + 2 u + 130
= 5 u + 130
5 u + 130 = 4220
5 u = 4220 - 130 = 4090
5 u = 4090
1 u = 4090 ÷ 5 = 818
Amount that Bryan has
= 2 u + 130
= 2 x 818 + 130
= 1636 + 130
= $1766
(b)
Amount that Adam has
= 2 u
= $1636
(c)
Amount that Charlie has
= 1 u
= $818
Answer(s): (a) $1766; (b) $1636; (c) $818