3 cousins share some stickers.
Adam has 20 more than Bryan.
Bryan has 3 times as many as Charlie.
Adam and Bryan have 100 more than Charlie.
- How many stickers does Bryan have?
- How many stickers does Adam have?
- How many stickers do Adam 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 Bryan has = 3 u
Number of stickers that Adam has = 3 u + 20
Number of stickers that Adam and Bryan have is 100 more than Charlie.
Number
of stickers that Adam and Bryan have = 1 u + 100 3 u + 20 + 3 u = 1 u + 100 6 u - 1 u = 100 - 20 5 u = 80
1 u = 80 ÷ 5 = 16 (a)
Number of stickers that Bryan has
= 3 x 16
= 48
(b)
Number of stickers that Adam has
= 3 u + 20
= 3 × 16 + 20
= 48 + 20
= 68
(c)
Number of stickers that Adam and Charlie have
= 3 u + 20 + 1 u
= 68 + 16
= 84
Answer(s): (a) 48; (b) 68; (c) 84