3 children share some stickers.
Charlie has 20 more than Bryan.
Bryan has 4 times as many as Adam.
Charlie and Bryan have 300 more than Adam.
- How many stickers does Bryan have?
- How many stickers does Charlie have?
- How many stickers do Charlie and Adam have?
Choose the person with least stickers to be 1 u.
Number of stickers that Adam has = 1 u
Number of stickers that Bryan has = 4 u
Number of stickers that Charlie has = 4 u + 20
Number of stickers that Charlie and Bryan have is 300 more than Adam.
Number
of stickers that Charlie and Bryan have = 1 u + 300 4 u + 20 + 4 u = 1 u + 300 8 u - 1 u = 300 - 20 7 u = 280
1 u = 280 ÷ 7 = 40 (a)
Number of stickers that Bryan has
= 4 x 40
= 160
(b)
Number of stickers that Charlie has
= 4 u + 20
= 4 × 40 + 20
= 160 + 20
= 180
(c)
Number of stickers that Charlie and Adam have
= 4 u + 20 + 1 u
= 180 + 40
= 220
Answer(s): (a) 160; (b) 180; (c) 220