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20 July, 07:27

A county is in the shape of a rectangle that is 60 miles by 70 miles and has a population of 50,000. What is the average number of people living on each square mile of the county? Round your answer to the nearest whole number.

192

10

14

12

+1
Answers (1)
  1. 20 July, 08:37
    0
    The correct answer is:

    12

    Step-by-step explanation:

    Length of county = 70 miles

    breadth of county = 60 miles

    area of county (rectangle) = Length * Breadth = 60 * 70 = 4,200 sqaure miles

    population of county = 50,000

    Therefore, to find the average number of people living on each square mile of the county, we will assume that the whole population is equally distributed in the county, hence the population per square mile is calculated thus:

    Total area = 4,200 square miles

    total population = 50,000

    This means that:

    4,200 square miles contains 50,000 people

    4,200 sq. miles = 50,000 people

    ∴ 1 sq. mile = 50,000 : 4,200 = 11.9 = 12 people (to the nearest whole number)

    therefore number of people living per square mile = 12
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