3 cousins share some stickers.
Bryan has 90 more than Charlie.
Charlie has 2 times as many as Adam.
Bryan and Charlie have 300 more than Adam.
- How many stickers does Charlie have?
- How many stickers does Bryan have?
- How many stickers do Bryan 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 Charlie has = 2 u
Number of stickers that Bryan has = 2 u + 90
Number of stickers that Bryan and Charlie have is 300 more than Adam.
Number
of stickers that Bryan and Charlie have = 1 u + 300 2 u + 90 + 2 u = 1 u + 300 4 u - 1 u = 300 - 90 3 u = 210
1 u = 210 ÷ 3 = 70 (a)
Number of stickers that Charlie has
= 2 x 70
= 140
(b)
Number of stickers that Bryan has
= 2 u + 90
= 2 × 70 + 90
= 140 + 90
= 230
(c)
Number of stickers that Bryan and Adam have
= 2 u + 90 + 1 u
= 230 + 70
= 300
Answer(s): (a) 140; (b) 230; (c) 300