3 cousins share some stickers.
Adam has 20 more than Charlie.
Charlie has 3 times as many as Bryan.
Adam and Charlie have 300 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 = 3 u
Number of stickers that Adam has = 3 u + 20
Number of stickers that Adam and Charlie have is 300 more than Bryan.
Number
of stickers that Adam and Charlie have = 1 u + 300 3 u + 20 + 3 u = 1 u + 300 6 u - 1 u = 300 - 20 5 u = 280
1 u = 280 ÷ 5 = 56 (a)
Number of stickers that Charlie has
= 3 x 56
= 168
(b)
Number of stickers that Adam has
= 3 u + 20
= 3 × 56 + 20
= 168 + 20
= 188
(c)
Number of stickers that Adam and Bryan have
= 3 u + 20 + 1 u
= 188 + 56
= 244
Answer(s): (a) 168; (b) 188; (c) 244