3 children have a total of 1800 stickers.
Adam has 4 times as many stickers as Charlie.
Bryan has 300 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 + 300
Total number of stickers
= 1 u + 4 u + 1 u + 300
= 6 u + 300
6 u + 300 = 1800
6 u = 1800 - 300
6 u = 1500
1 u = 1500 ÷ 6 = 250
Number of stickers that Adam and Charlie have
= 4 u + 1 u
= 5 u
= 5 x 250
= 1250
(b)
Number of stickers that Charlie has less than Adam
= 4 u - 1u
= 3 u
= 3 x 250
= 750
(c)
Number of stickers that Charlie has less than Adam and Bryan
= (4 u + 1 u + 300) - 1 u
= 4 u + 300
= 4 x 250 + 300
= 1000 + 300
= 1300
Answer(s); (a) 1250; (b) 750; (c) 1300