If 15 copies of a book cost Rs175.50, what is the cost of 3 copies of the book?​

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1. Answer:

   15 copies of a book cost Rs=175.50

   1 copies of a book cost rs=175.50/15

   =rs 11.70

   then 3 copies of a book cost rs=11.70*3

   =Rs 35.10 (Answer)

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