3 buddies share some stickers.
Bryan has 70 more than Adam.
Adam has 2 times as many as Charlie.
Bryan and Adam have 400 more than Charlie.
- How many stickers does Adam have?
- How many stickers does Bryan have?
- How many stickers do Bryan and Charlie 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 = 2 u
Number of stickers that Bryan has = 2 u + 70
Number of stickers that Bryan and Adam have is 400 more than Charlie.
Number
of stickers that Bryan and Adam have = 1 u + 400 2 u + 70 + 2 u = 1 u + 400 4 u - 1 u = 400 - 70 3 u = 330
1 u = 330 ÷ 3 = 110 (a)
Number of stickers that Adam has
= 2 x 110
= 220
(b)
Number of stickers that Bryan has
= 2 u + 70
= 2 × 110 + 70
= 220 + 70
= 290
(c)
Number of stickers that Bryan and Charlie have
= 2 u + 70 + 1 u
= 290 + 110
= 400
Answer(s): (a) 220; (b) 290; (c) 400