3 children have a total of 1500 stickers.
Adam has 2 times as many stickers as Charlie.
Bryan has 500 stickers more stickers than Charlie.
- How many stickers do Adam and Charlie have?
- How many stickers does Charlie have less than Adam?
- How many stickers does Charlie have less than Adam and Bryan?
(a)
Choose the person with least stickers to be 1 u.
Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 2 u = 2 u
Number of stickers that Bryan has = 1 u + 500
Total number of stickers
= 1 u + 2 u + 1 u + 500
= 4 u + 500
4 u + 500 = 1500
4 u = 1500 - 500
4 u = 1000
1 u = 1000 ÷ 4 = 250
Number of stickers that Adam and Charlie have
= 2 u + 1 u
= 3 u
= 3 x 250
= 750
(b)
Number of stickers that Charlie has less than Adam
= 2 u - 1u
= 1 u
= 1 x 250
= 250
(c)
Number of stickers that Charlie has less than Adam and Bryan
= (2 u + 1 u + 500) - 1 u
= 2 u + 500
= 2 x 250 + 500
= 500 + 500
= 1000
Answer(s); (a) 750; (b) 250; (c) 1000