3 boys share some stickers.
Charlie has 10 more than Adam.
Adam has 2 times as many as Bryan.
Charlie and Adam have 400 more than Bryan.
- How many stickers does Adam have?
- How many stickers does Charlie have?
- How many stickers do Charlie 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 Adam has = 2 u
Number of stickers that Charlie has = 2 u + 10
Number of stickers that Charlie and Adam have is 400 more than Bryan.
Number
of stickers that Charlie and Adam have = 1 u + 400 2 u + 10 + 2 u = 1 u + 400 4 u - 1 u = 400 - 10 3 u = 390
1 u = 390 ÷ 3 = 130 (a)
Number of stickers that Adam has
= 2 x 130
= 260
(b)
Number of stickers that Charlie has
= 2 u + 10
= 2 × 130 + 10
= 260 + 10
= 270
(c)
Number of stickers that Charlie and Bryan have
= 2 u + 10 + 1 u
= 270 + 130
= 400
Answer(s): (a) 260; (b) 270; (c) 400
