3 children have a total of 2000 stickers.
Adam has 5 times as many stickers as Charlie.
Bryan has 600 stickers more stickers than Charlie.

1. How many stickers do Adam and Charlie have?
2. How many stickers does Charlie have less than Adam?
3. How many stickers does Charlie have less than Adam and Bryan?

(a)
Choose the person with least stickers to be 1 u.

Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 5 u = 5 u
Number of stickers that Bryan has = 1 u + 600

Total number of stickers
= 1 u + 5 u + 1 u + 600
= 7 u + 600

7 u + 600 = 2000
7 u = 2000 - 600
7 u = 1400

1 u = 1400 ÷ 7 = 200

Number of stickers that Adam and Charlie have
= 5 u + 1 u
= 6 u
= 6 x 200
= 1200

(b)
Number of stickers that Charlie has less than Adam
= 5 u - 1u
= 4 u
= 4 x 200
= 800

(c)
Number of stickers that Charlie has less than Adam and Bryan
= (5 u + 1 u + 600) - 1 u
= 5 u + 600
= 5 x 200 + 600
= 1000 + 600
= 1600

Answer(s); (a) 1200; (b) 800; (c) 1600