3 children have 1800 stickers.
Bryan has 200 more than Charlie
but 200 less than Adam.
- How many stickers does Charlie have?
- How many stickers does Bryan have?
- How many stickers does Adam have?
Choose the person with least stickers to be 1 u.
Number of stickers that Charlie has = 1 u
Number of stickers that Bryan has = 1 u + 200
Number of stickers that Adam has = 1 u + 200 + 200 = 1 u + 400
Total number of stickers
= 1 u + 1 u + 200 + 1 u + 400
= 3 u + 600
3 u + 600 = 1800
3 u = 1800 - 600
3 u = 1200
1 u = 1200 ÷ 3 = 400
(a)
Number of stickers that Charlie has
= 1 u
= 400
(b)
Number of stickers that Bryan has
= 1 u + 200
= 400 + 200
= 600
(c)
Number of stickers that Adam has
= 1 u + 400
= 400 + 400
= 800
Answer(s): (a) 400; (b) 600; (c) 800
