3 cousins share some stickers.
Bryan has 20 more than Adam.
Adam has 3 times as many as Charlie.
Bryan and Adam have 700 more than Charlie.
- How many stickers does Adam have?
- How many stickers does Bryan have?
- How many stickers do Bryan and Charlie have?
Choose the person with least stickers to be 1 u.
Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 3 u
Number of stickers that Bryan has = 3 u + 20
Number of stickers that Bryan and Adam have is 700 more than Charlie.
Number
of stickers that Bryan and Adam have = 1 u + 700 3 u + 20 + 3 u = 1 u + 700 6 u - 1 u = 700 - 20 5 u = 680
1 u = 680 ÷ 5 = 136 (a)
Number of stickers that Adam has
= 3 x 136
= 408
(b)
Number of stickers that Bryan has
= 3 u + 20
= 3 × 136 + 20
= 408 + 20
= 428
(c)
Number of stickers that Bryan and Charlie have
= 3 u + 20 + 1 u
= 428 + 136
= 564
Answer(s): (a) 408; (b) 428; (c) 564