Population Density

Question

Please!! Can someone help me with this problem. 

Which of the following population densities are equivalent to a density of 50 people/mi2?

 

1 person/0.02 mi2
1 person/0.5 mi2
100 people/2 mi2
500 people/5 mi2
1 person/0.2 mi2

 

Answer 1

The ratio must equal 50.

 

1/0.02 = 50

100/2 = 50

 

The others do not give 50.  The 1st and 3rd alternatives are equivalent to 50/1.