3 boys share some stickers.
Charlie has 60 more than Adam.
Adam has 2 times as many as Bryan.
Charlie and Adam have 900 more than Bryan.
- How many stickers does Adam have?
- How many stickers does Charlie have?
- How many stickers do Charlie and Bryan have?
Choose the person with least stickers to be 1 u.
Number of stickers that Bryan has = 1 u
Number of stickers that Adam has = 2 u
Number of stickers that Charlie has = 2 u + 60
Number of stickers that Charlie and Adam have is 900 more than Bryan.
Number
of stickers that Charlie and Adam have = 1 u + 900 2 u + 60 + 2 u = 1 u + 900 4 u - 1 u = 900 - 60 3 u = 840
1 u = 840 ÷ 3 = 280 (a)
Number of stickers that Adam has
= 2 x 280
= 560
(b)
Number of stickers that Charlie has
= 2 u + 60
= 2 × 280 + 60
= 560 + 60
= 620
(c)
Number of stickers that Charlie and Bryan have
= 2 u + 60 + 1 u
= 620 + 280
= 900
Answer(s): (a) 560; (b) 620; (c) 900
