Study the given pie - chart and answer the question that follows.
The following pie - chart shows the percentage of literate and illiterate - males and females in a city. 

What is the difference between the number of literate males and literate females if the number of illiterate males is 648?

Correct option is A

Given:

Percentage of Illiterate Males = 18%.

Percentage of Literate Males = 36%.

Percentage of Illiterate Females = 14%.

Percentage of Literate Females = 32%.

Number of Illiterate Males = 648

Solution:

Since the number of illiterate males is given as 648,

The total population:

$$\frac{18}{100} \times P = 648$$​​

​$$P = \frac{648 \times 100}{18} = 3600$$​​

So, the total population of the city is 3600

Literate Males = $$\frac{36}{100} \times 3600$$​ = 1296

Literate Females = $$\frac{32}{100} \times 3600$$​ = 1152

Difference = 1296 - 1152 = 144