3 brothers share some stickers.
Bryan has 20 more than Charlie.
Charlie has 3 times as many as Adam.
Bryan and Charlie have 400 more than Adam.
- How many stickers does Charlie have?
- How many stickers does Bryan have?
- How many stickers do Bryan and Adam have?
Choose the person with least stickers to be 1 u.
Number of stickers that Adam has = 1 u
Number of stickers that Charlie has = 3 u
Number of stickers that Bryan has = 3 u + 20
Number of stickers that Bryan and Charlie have is 400 more than Adam.
Number
of stickers that Bryan and Charlie have = 1 u + 400 3 u + 20 + 3 u = 1 u + 400 6 u - 1 u = 400 - 20 5 u = 380
1 u = 380 ÷ 5 = 76 (a)
Number of stickers that Charlie has
= 3 x 76
= 228
(b)
Number of stickers that Bryan has
= 3 u + 20
= 3 × 76 + 20
= 228 + 20
= 248
(c)
Number of stickers that Bryan and Adam have
= 3 u + 20 + 1 u
= 248 + 76
= 324
Answer(s): (a) 228; (b) 248; (c) 324