3 buddies share some stickers.
Charlie has 70 more than Adam.
Adam has 2 times as many as Bryan.
Charlie and Adam have 100 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 + 70
Number of stickers that Charlie and Adam have is 100 more than Bryan.
Number
of stickers that Charlie and Adam have = 1 u + 100 2 u + 70 + 2 u = 1 u + 100 4 u - 1 u = 100 - 70 3 u = 30
1 u = 30 ÷ 3 = 10 (a)
Number of stickers that Adam has
= 2 x 10
= 20
(b)
Number of stickers that Charlie has
= 2 u + 70
= 2 × 10 + 70
= 20 + 70
= 90
(c)
Number of stickers that Charlie and Bryan have
= 2 u + 70 + 1 u
= 90 + 10
= 100
Answer(s): (a) 20; (b) 90; (c) 100