Question

WHat is the unit rate in terms of people per square mile when there are 646,449 people in 68.3 square miles?

Answer 1

If there are 646,449 people in 68.3 square miles. each square mile area has 9465 people.

Answer 2

The answer is
`(646,449)/(68.3) =9,464.85`

Explanation:

In order to determine the unit rate, we have to know about rates.

In any "rate", the number is representing the fraction of two measures. For example in physics, the velocity is the rate of distance per time, where we divide the distance measure by the time measure.

In this case, we have two measures:

1. people.
2. square mile.

So, the rate that relates both measures is:

`(people)/(square mile) \\(646,449)/(68.3)\\ 9,464.85`

Finally the unit rate is:

`(646,449)/(68.3) =9,464.85`