3 children have a total of 800 stickers.
Adam has 4 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 = 4 u = 4 u
Number of stickers that Bryan has = 1 u + 500
Total number of stickers
= 1 u + 4 u + 1 u + 500
= 6 u + 500
6 u + 500 = 800
6 u = 800 - 500
6 u = 300
1 u = 300 ÷ 6 = 50
Number of stickers that Adam and Charlie have
= 4 u + 1 u
= 5 u
= 5 x 50
= 250
(b)
Number of stickers that Charlie has less than Adam
= 4 u - 1u
= 3 u
= 3 x 50
= 150
(c)
Number of stickers that Charlie has less than Adam and Bryan
= (4 u + 1 u + 500) - 1 u
= 4 u + 500
= 4 x 50 + 500
= 200 + 500
= 700
Answer(s); (a) 250; (b) 150; (c) 700