3 children have 1600 stickers.
Charlie has 100 more than Bryan
but 200 less than Adam.
- How many stickers does Bryan have?
- How many stickers does Charlie have?
- How many stickers does Adam have?
Choose the person with least stickers to be 1 u.
Number of stickers that Bryan has = 1 u
Number of stickers that Charlie has = 1 u + 100
Number of stickers that Adam 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 = 1600
3 u = 1600 - 400
3 u = 1200
1 u = 1200 ÷ 3 = 400
(a)
Number of stickers that Bryan has
= 1 u
= 400
(b)
Number of stickers that Charlie has
= 1 u + 100
= 400 + 100
= 500
(c)
Number of stickers that Adam has
= 1 u + 300
= 400 + 300
= 700
Answer(s): (a) 400; (b) 500; (c) 700
