3 children have a total of $3970.
Adam has $370 more than Bryan.
Bryan has 2 times as much as Charlie.
- How much does Adam have?
- How much does Bryan 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 Bryan has = 2 u
Amount that Adam has = 2 u + 370
Total amount that Adam, Bryan and Charlie
= 1 u + 2 u + 2 u + 370
= 5 u + 370
5 u + 370 = 3970
5 u = 3970 - 370 = 3600
5 u = 3600
1 u = 3600 ÷ 5 = 720
Amount that Adam has
= 2 u + 370
= 2 x 720 + 370
= 1440 + 370
= $1810
(b)
Amount that Bryan has
= 2 u
= $1440
(c)
Amount that Charlie has
= 1 u
= $720
Answer(s): (a) $1810; (b) $1440; (c) $720