3 children have 1900 stickers.
Adam has 100 more than Charlie
but 200 less than Bryan.
- How many stickers does Charlie have?
- How many stickers does Adam have?
- How many stickers does Bryan have?
Choose the person with least stickers to be 1 u.
Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 1 u + 100
Number of stickers that Bryan has = 1 u + 100 + 200 = 1 u + 300
Total number of stickers
= 1 u + 1 u + 100 + 1 u + 300
= 3 u + 400
3 u + 400 = 1900
3 u = 1900 - 400
3 u = 1500
1 u = 1500 ÷ 3 = 500
(a)
Number of stickers that Charlie has
= 1 u
= 500
(b)
Number of stickers that Adam has
= 1 u + 100
= 500 + 100
= 600
(c)
Number of stickers that Bryan has
= 1 u + 300
= 500 + 300
= 800
Answer(s): (a) 500; (b) 600; (c) 800