3 children have a total of $2070.
Charlie has $400 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 + 400
Total amount that Charlie, Adam and Bryan
= 1 u + 2 u + 2 u + 400
= 5 u + 400
5 u + 400 = 2070
5 u = 2070 - 400 = 1670
5 u = 1670
1 u = 1670 ÷ 5 = 334
Amount that Charlie has
= 2 u + 400
= 2 x 334 + 400
= 668 + 400
= $1068
(b)
Amount that Adam has
= 2 u
= $668
(c)
Amount that Bryan has
= 1 u
= $334
Answer(s): (a) $1068; (b) $668; (c) $334