3 cousins share some stickers.
Adam has 80 more than Charlie.
Charlie has 5 times as many as Bryan.
Adam and Charlie have 800 more than Bryan.
- How many stickers does Charlie have?
- How many stickers does Adam have?
- How many stickers do Adam 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 Charlie has = 5 u
Number of stickers that Adam has = 5 u + 80
Number of stickers that Adam and Charlie have is 800 more than Bryan.
Number
of stickers that Adam and Charlie have = 1 u + 800 5 u + 80 + 5 u = 1 u + 800 10 u - 1 u = 800 - 80 9 u = 720
1 u = 720 ÷ 9 = 80 (a)
Number of stickers that Charlie has
= 5 x 80
= 400
(b)
Number of stickers that Adam has
= 5 u + 80
= 5 × 80 + 80
= 400 + 80
= 480
(c)
Number of stickers that Adam and Bryan have
= 5 u + 80 + 1 u
= 480 + 80
= 560
Answer(s): (a) 400; (b) 480; (c) 560