Question

A diagram shows circles to represent the populations of various countries in the world. The circle for India has a radius of 3.2 cm and the circle for China has a radius of 3.4 cm. If 17% of the world’s population is in India, what percentage of the world’s population is in China? Round to the nearest percent.

Answer 1

Let, the radius of all world population = x
It would be: x * 17% = 3.2
x * 0.17 = 3.2
x = 3.2 / 0.17
x = 18.82

Now, China's population = 3.4/18.82 * 100 = 18.06

In short, Your Answer would be 18.06%

Hope this helps!