3 children have a total of $3580.
Bryan has $400 more than Charlie.
Charlie has 2 times as much as Adam.
- How much does Bryan have?
- How much does Charlie have?
- How much does Adam have?
(a)
Choose the person with least money to be 1 u.
Amount that Adam has = 1 u
Amount that Charlie has = 2 u
Amount that Bryan has = 2 u + 400
Total amount that Bryan, Charlie and Adam
= 1 u + 2 u + 2 u + 400
= 5 u + 400
5 u + 400 = 3580
5 u = 3580 - 400 = 3180
5 u = 3180
1 u = 3180 ÷ 5 = 636
Amount that Bryan has
= 2 u + 400
= 2 x 636 + 400
= 1272 + 400
= $1672
(b)
Amount that Charlie has
= 2 u
= $1272
(c)
Amount that Adam has
= 1 u
= $636
Answer(s): (a) $1672; (b) $1272; (c) $636