Question 37 - Math Practice Test for the CBEST

On a home bookshelf, there are 20 mysteries, 6 biographies, 8 reference books, and 6 travel books. If one is picked at random, what is the probability that it will be a biography or a travel book?

\[\dfrac{1}{2}\]
\[\dfrac{3}{20}\]
\[\dfrac{3}{10}\]
\[\dfrac{3}{5}\]

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