Correct option is C
Given:
40% of people read Times of India
50% read Hindustan Times
10% read both newspapers
Formula:
% of people who read at least one newspaper
= % who read Times of India + % who read Hindustan Times – % who read both
% who read neither
= 100% – % who read at least one newspaper
Solution:
Find the percentage of people who read at least one newspaper
= 40% + 50% - 10%
= 80%
Find the percentage of people who read neither newspaper
= 100% - 80%
= 20%
Final Answer: (C) 20%