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