3 children have a total of 2300 stickers.
Charlie has 4 times as many stickers as Adam.
Bryan has 800 stickers more stickers than Adam.
- How many stickers do Charlie and Adam have?
- How many stickers does Adam have less than Charlie?
- How many stickers does Adam have less than Charlie and Bryan?
(a)
Choose the person with least stickers to be 1 u.
Number of stickers that Adam has = 1 u
Number of stickers that Charlie has = 4 u = 4 u
Number of stickers that Bryan has = 1 u + 800
Total number of stickers
= 1 u + 4 u + 1 u + 800
= 6 u + 800
6 u + 800 = 2300
6 u = 2300 - 800
6 u = 1500
1 u = 1500 ÷ 6 = 250
Number of stickers that Charlie and Adam have
= 4 u + 1 u
= 5 u
= 5 x 250
= 1250
(b)
Number of stickers that Adam has less than Charlie
= 4 u - 1u
= 3 u
= 3 x 250
= 750
(c)
Number of stickers that Adam has less than Charlie and Bryan
= (4 u + 1 u + 800) - 1 u
= 4 u + 800
= 4 x 250 + 800
= 1000 + 800
= 1800
Answer(s); (a) 1250; (b) 750; (c) 1800