3 children have a total of $4000.
Bryan has $140 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 + 140
Total amount that Bryan, Adam and Charlie
= 1 u + 2 u + 2 u + 140
= 5 u + 140
5 u + 140 = 4000
5 u = 4000 - 140 = 3860
5 u = 3860
1 u = 3860 ÷ 5 = 772
Amount that Bryan has
= 2 u + 140
= 2 x 772 + 140
= 1544 + 140
= $1684
(b)
Amount that Adam has
= 2 u
= $1544
(c)
Amount that Charlie has
= 1 u
= $772
Answer(s): (a) $1684; (b) $1544; (c) $772