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3 years ago

7

Justin has written 5 novels with an average length of 450 pages. If his sixth novel is 750 pages long, what is the average lengt

h of all 6 novels?
A 500 pages
B 550 pages
C 600 pages
D 650 pages

1 answer:

OLga [1]3 years ago

4 0

Answer:

<u><em>Option A: 500 pages</em></u>

Explanation:

<u>1. Number of pages of the first 5 novels</u>

Average = [Number of pages] / [number of novels]

450 pages / novel = Number of pages / 5 novels

Number of pages = 5 novels × 450 pages / novel = 2,250 pages

<u>2. Average length of all 6 novels</u>

Average = [Number of pages] / [number of novels]

Number of pages of 6 novels = 2,250 pages + 750 pages = 3,000 pages

Average = 3,000 pages / 6 novels = 500 pages / novel

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