3 children have a total of $2420.
Charlie has $450 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 + 450
Total amount that Charlie, Adam and Bryan
= 1 u + 2 u + 2 u + 450
= 5 u + 450
5 u + 450 = 2420
5 u = 2420 - 450 = 1970
5 u = 1970
1 u = 1970 ÷ 5 = 394
Amount that Charlie has
= 2 u + 450
= 2 x 394 + 450
= 788 + 450
= $1238
(b)
Amount that Adam has
= 2 u
= $788
(c)
Amount that Bryan has
= 1 u
= $394
Answer(s): (a) $1238; (b) $788; (c) $394