Question

(2 points) In the state of Indiana, 471700 people don't drive. If this is 8.9% of the population of Indiana residents aged 5 years and older, estimate the population of Indiana residents aged 5 years and older. Express your answer rounded to the nearest hundredth of a million.

Answer 1

You have that in the state of Indiana, 471700 people don't drive. And this population corresponds to the 8.9% of the total population of Indiana resident aged 5 years and older.

In order to calculate the Indiana residents aged 5 years and older, you can use the information about people don't drive and the percentage about it. You can write the given specification as follow:

x(8.9/100) = 471700

where the unknown value x is the total population. When this factor x is multiplied by 8.9/100 you are calculating the 8.9% of that value, which in this case is equal to 471700.

Then, you solve the last equation for x, just as follow:

x(8.9/100) = 471700

x(0.089) = 471700

x = 471700/0.089 = 5300000

Hence, the total population of Indiana resident aged 5 years or older are 5,300,000