3 children have a total of 700 stickers.
Bryan has 4 times as many stickers as Adam.
Charlie has 400 stickers more stickers than Adam.
- How many stickers do Bryan and Adam have?
- How many stickers does Adam have less than Bryan?
- How many stickers does Adam have less than Bryan and Charlie?
(a)
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 = 4 u
Number of stickers that Charlie has = 1 u + 400
Total number of stickers
= 1 u + 4 u + 1 u + 400
= 6 u + 400
6 u + 400 = 700
6 u = 700 - 400
6 u = 300
1 u = 300 ÷ 6 = 50
Number of stickers that Bryan and Adam have
= 4 u + 1 u
= 5 u
= 5 x 50
= 250
(b)
Number of stickers that Adam has less than Bryan
= 4 u - 1u
= 3 u
= 3 x 50
= 150
(c)
Number of stickers that Adam has less than Bryan and Charlie
= (4 u + 1 u + 400) - 1 u
= 4 u + 400
= 4 x 50 + 400
= 200 + 400
= 600
Answer(s); (a) 250; (b) 150; (c) 600