3 children have a total of $3920.
Bryan has $140 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 + 140
Total amount that Bryan, Adam and Charlie
= 1 u + 4 u + 4 u + 140
= 9 u + 140
9 u + 140 = 3920
9 u = 3920 - 140 = 3780
9 u = 3780
1 u = 3780 ÷ 9 = 420
Amount that Bryan has
= 4 u + 140
= 4 x 420 + 140
= 1680 + 140
= $1820
(b)
Amount that Adam has
= 4 u
= $1680
(c)
Amount that Charlie has
= 1 u
= $420
Answer(s): (a) $1820; (b) $1680; (c) $420