3 children have a total of 1400 stickers.
Charlie has 4 times as many stickers as Bryan.
Adam has 500 stickers more stickers than Bryan.
- How many stickers do Charlie and Bryan have?
- How many stickers does Bryan have less than Charlie?
- How many stickers does Bryan have less than Charlie and Adam?
(a)
Choose the person with least stickers to be 1 u.
Number of stickers that Bryan has = 1 u
Number of stickers that Charlie has = 4 u = 4 u
Number of stickers that Adam has = 1 u + 500
Total number of stickers
= 1 u + 4 u + 1 u + 500
= 6 u + 500
6 u + 500 = 1400
6 u = 1400 - 500
6 u = 900
1 u = 900 ÷ 6 = 150
Number of stickers that Charlie and Bryan have
= 4 u + 1 u
= 5 u
= 5 x 150
= 750
(b)
Number of stickers that Bryan has less than Charlie
= 4 u - 1u
= 3 u
= 3 x 150
= 450
(c)
Number of stickers that Bryan has less than Charlie and Adam
= (4 u + 1 u + 500) - 1 u
= 4 u + 500
= 4 x 150 + 500
= 600 + 500
= 1100
Answer(s); (a) 750; (b) 450; (c) 1100