3 boys share some stickers.
Charlie has 40 more than Bryan.
Bryan has 2 times as many as Adam.
Charlie and Bryan have 100 more than Adam.
- How many stickers does Bryan have?
- How many stickers does Charlie have?
- How many stickers do Charlie and Adam have?
Choose the person with least stickers to be 1 u.
Number of stickers that Adam has = 1 u
Number of stickers that Bryan has = 2 u
Number of stickers that Charlie has = 2 u + 40
Number of stickers that Charlie and Bryan have is 100 more than Adam.
Number
of stickers that Charlie and Bryan have = 1 u + 100 2 u + 40 + 2 u = 1 u + 100 4 u - 1 u = 100 - 40 3 u = 60
1 u = 60 ÷ 3 = 20 (a)
Number of stickers that Bryan has
= 2 x 20
= 40
(b)
Number of stickers that Charlie has
= 2 u + 40
= 2 × 20 + 40
= 40 + 40
= 80
(c)
Number of stickers that Charlie and Adam have
= 2 u + 40 + 1 u
= 80 + 20
= 100
Answer(s): (a) 40; (b) 80; (c) 100