3 children have 1800 stickers.
Charlie has 700 more than Bryan
but 100 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 + 700
Number of stickers that Adam has = 1 u + 700 + 100 = 1 u + 800
Total number of stickers
= 1 u + 1 u + 700 + 1 u + 800
= 3 u + 1500
3 u + 1500 = 1800
3 u = 1800 - 1500
3 u = 300
1 u = 300 ÷ 3 = 100
(a)
Number of stickers that Bryan has
= 1 u
= 100
(b)
Number of stickers that Charlie has
= 1 u + 700
= 100 + 700
= 800
(c)
Number of stickers that Adam has
= 1 u + 800
= 100 + 800
= 900
Answer(s): (a) 100; (b) 800; (c) 900