Study the table and answer the following questions:
If 30% of the total number of books sold by store Q, S and T together in April were Academic books, how many non-academic books were sold by the same stores together in the same month?
Total number of books sold by P, S and T in April = 208+187+175 = 570
Now, 30% of the books were academic,
Number of academic books = 171
Number of non-academic books = 570-171 = 399
Hence, the correct option is E.
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