3 buddies share some stickers.
Charlie has 90 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 + 90
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 + 90 + 2 u = 1 u + 900 4 u - 1 u = 900 - 90 3 u = 810
1 u = 810 ÷ 3 = 270 (a)
Number of stickers that Adam has
= 2 x 270
= 540
(b)
Number of stickers that Charlie has
= 2 u + 90
= 2 × 270 + 90
= 540 + 90
= 630
(c)
Number of stickers that Charlie and Bryan have
= 2 u + 90 + 1 u
= 630 + 270
= 900
Answer(s): (a) 540; (b) 630; (c) 900