Bunuel wrote:

A school library contains 200 hardcover and 300 paperback books. 30% of the hardcover books and 70% of the paperbacks are fiction. If a book is selected at random from the 500 books at the library, what is the probability that the book is either paperback or fiction?

A. 72%

B. 76%

C. 80%

D. 82%

E. 84%

Hard cover Fiction = 30% of 200 = 60

Paperback Fiction = 70% of 300 = 210

Remaining Paper back = 300-210 = 90

Total Favourable Books = 60+210+90 = 360

Probability = 360/500 = 18/25 = 72%

Answer: Option A

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