3 children have a total of $1280.
Charlie has $400 more than Adam.
Adam has 5 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 = 5 u
Amount that Charlie has = 5 u + 400
Total amount that Charlie, Adam and Bryan
= 1 u + 5 u + 5 u + 400
= 11 u + 400
11 u + 400 = 1280
11 u = 1280 - 400 = 880
11 u = 880
1 u = 880 ÷ 11 = 80
Amount that Charlie has
= 5 u + 400
= 5 x 80 + 400
= 400 + 400
= $800
(b)
Amount that Adam has
= 5 u
= $400
(c)
Amount that Bryan has
= 1 u
= $80
Answer(s): (a) $800; (b) $400; (c) $80