3 children have a total of $3690.
Charlie has $140 more than Adam.
Adam has 2 times as much as Bryan.
- How much does Charlie have?
- How much does Adam have?
- How much does Bryan have?
(a)
Choose the person with least money to be 1 u.
Amount that Bryan has = 1 u
Amount that Adam has = 2 u
Amount that Charlie has = 2 u + 140
Total amount that Charlie, Adam and Bryan
= 1 u + 2 u + 2 u + 140
= 5 u + 140
5 u + 140 = 3690
5 u = 3690 - 140 = 3550
5 u = 3550
1 u = 3550 ÷ 5 = 710
Amount that Charlie has
= 2 u + 140
= 2 x 710 + 140
= 1420 + 140
= $1560
(b)
Amount that Adam has
= 2 u
= $1420
(c)
Amount that Bryan has
= 1 u
= $710
Answer(s): (a) $1560; (b) $1420; (c) $710