3 children have a total of 2000 stickers.
Charlie has 3 times as many stickers as Adam.
Bryan has 300 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 = 3 u = 3 u
Number of stickers that Bryan has = 1 u + 300
Total number of stickers
= 1 u + 3 u + 1 u + 300
= 5 u + 300
5 u + 300 = 2000
5 u = 2000 - 300
5 u = 1700
1 u = 1700 ÷ 5 = 340
Number of stickers that Charlie and Adam have
= 3 u + 1 u
= 4 u
= 4 x 340
= 1360
(b)
Number of stickers that Adam has less than Charlie
= 3 u - 1u
= 2 u
= 2 x 340
= 680
(c)
Number of stickers that Adam has less than Charlie and Bryan
= (3 u + 1 u + 300) - 1 u
= 3 u + 300
= 3 x 340 + 300
= 1020 + 300
= 1320
Answer(s); (a) 1360; (b) 680; (c) 1320