3 children have 1900 stickers.
Adam has 200 more than Bryan
but 900 less than Charlie.
- How many stickers does Bryan have?
- How many stickers does Adam have?
- How many stickers does Charlie have?
Choose the person with least stickers to be 1 u.
Number of stickers that Bryan has = 1 u
Number of stickers that Adam has = 1 u + 200
Number of stickers that Charlie has = 1 u + 200 + 900 = 1 u + 1100
Total number of stickers
= 1 u + 1 u + 200 + 1 u + 1100
= 3 u + 1300
3 u + 1300 = 1900
3 u = 1900 - 1300
3 u = 600
1 u = 600 ÷ 3 = 200
(a)
Number of stickers that Bryan has
= 1 u
= 200
(b)
Number of stickers that Adam has
= 1 u + 200
= 200 + 200
= 400
(c)
Number of stickers that Charlie has
= 1 u + 1100
= 200 + 1100
= 1300
Answer(s): (a) 200; (b) 400; (c) 1300
