3 children have a total of 2200 stickers.
Bryan has 2 times as many stickers as Adam.
Charlie has 500 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 = 2 u = 2 u
Number of stickers that Charlie has = 1 u + 500
Total number of stickers
= 1 u + 2 u + 1 u + 500
= 4 u + 500
4 u + 500 = 2200
4 u = 2200 - 500
4 u = 1700
1 u = 1700 ÷ 4 = 425
Number of stickers that Bryan and Adam have
= 2 u + 1 u
= 3 u
= 3 x 425
= 1275
(b)
Number of stickers that Adam has less than Bryan
= 2 u - 1u
= 1 u
= 1 x 425
= 425
(c)
Number of stickers that Adam has less than Bryan and Charlie
= (2 u + 1 u + 500) - 1 u
= 2 u + 500
= 2 x 425 + 500
= 850 + 500
= 1350
Answer(s); (a) 1275; (b) 425; (c) 1350