3 children have 1200 stickers.
Bryan has 100 more than Charlie
but 700 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 + 100
Number of stickers that Adam has = 1 u + 100 + 700 = 1 u + 800
Total number of stickers
= 1 u + 1 u + 100 + 1 u + 800
= 3 u + 900
3 u + 900 = 1200
3 u = 1200 - 900
3 u = 300
1 u = 300 ÷ 3 = 100
(a)
Number of stickers that Charlie has
= 1 u
= 100
(b)
Number of stickers that Bryan has
= 1 u + 100
= 100 + 100
= 200
(c)
Number of stickers that Adam has
= 1 u + 800
= 100 + 800
= 900
Answer(s): (a) 100; (b) 200; (c) 900
