In a survey it was found that `69%` of Indians like romantic movies and `61%` like action movies. What percentage of Indians like both type of movies?

Explanation

To solve the problem, we will use the principle of inclusion-exclusion in set theory. Let's denote:

- \( R \): the set of people who like romantic movies.
- \( A \): the set of people who like action movies.

From the problem, we have:

- \( n(R) = 69\% \) (percentage of people who like romantic movies)
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