3 children have 1400 stickers.
Adam has 100 more than Charlie
but 600 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 + 600 = 1 u + 700
Total number of stickers
= 1 u + 1 u + 100 + 1 u + 700
= 3 u + 800
3 u + 800 = 1400
3 u = 1400 - 800
3 u = 600
1 u = 600 ÷ 3 = 200
(a)
Number of stickers that Charlie has
= 1 u
= 200
(b)
Number of stickers that Adam has
= 1 u + 100
= 200 + 100
= 300
(c)
Number of stickers that Bryan has
= 1 u + 700
= 200 + 700
= 900
Answer(s): (a) 200; (b) 300; (c) 900
