Question

The number of doctors per 10,000 inhabitants for each of 5 countries is recorded in the table. Country Doctors per 10,000 Inhabitants V 12 W 13 X 16 Y 18 Z 20 Country Z has about 4,000,000 inhabitants. Which of the following can be used to determine the approximate number of doctors in that country?

Answer 1

Given data:

For country Z

20 doctors per 10,000 inhabitant

Problem: Determine the approximate number of doctors in that country

Solution:

To determine the number of doctors in country Z with a population of 4,000,000 inhabitants, we will use the ratio approach

This can be illustrated as follow

We can then solve for x (The approximate number of doctors in the country)

If we cross multiply

`x=(4000000)/(10000)*20`

Therefore, the approximate number of doctors in country Z is