3 children have a total of 500 stickers.
Bryan has 2 times as many stickers as Charlie.
Adam has 300 stickers more stickers than Charlie.
- How many stickers do Bryan and Charlie have?
- How many stickers does Charlie have less than Bryan?
- How many stickers does Charlie have less than Bryan and Adam?
(a)
Choose the person with least stickers to be 1 u.
Number of stickers that Charlie has = 1 u
Number of stickers that Bryan has = 2 u = 2 u
Number of stickers that Adam has = 1 u + 300
Total number of stickers
= 1 u + 2 u + 1 u + 300
= 4 u + 300
4 u + 300 = 500
4 u = 500 - 300
4 u = 200
1 u = 200 ÷ 4 = 50
Number of stickers that Bryan and Charlie have
= 2 u + 1 u
= 3 u
= 3 x 50
= 150
(b)
Number of stickers that Charlie has less than Bryan
= 2 u - 1u
= 1 u
= 1 x 50
= 50
(c)
Number of stickers that Charlie has less than Bryan and Adam
= (2 u + 1 u + 300) - 1 u
= 2 u + 300
= 2 x 50 + 300
= 100 + 300
= 400
Answer(s); (a) 150; (b) 50; (c) 400