3 children share some stickers.
Charlie has 80 more than Adam.
Adam has 2 times as many as Bryan.
Charlie and Adam have 200 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 + 80
Number of stickers that Charlie and Adam have is 200 more than Bryan.
Number
of stickers that Charlie and Adam have = 1 u + 200 2 u + 80 + 2 u = 1 u + 200 4 u - 1 u = 200 - 80 3 u = 120
1 u = 120 ÷ 3 = 40 (a)
Number of stickers that Adam has
= 2 x 40
= 80
(b)
Number of stickers that Charlie has
= 2 u + 80
= 2 × 40 + 80
= 80 + 80
= 160
(c)
Number of stickers that Charlie and Bryan have
= 2 u + 80 + 1 u
= 160 + 40
= 200
Answer(s): (a) 80; (b) 160; (c) 200