A shopkeeper sold a book at a loss of 14%. If the selling price had been increased by Rs. 100, there would have been a gain of 6%. What was the cost price of the book?

Correct option is B

Loss % = $$\frac{ CP – SP}{CP} \times 100$$​​

Profit % = $$\frac{SP – CP} {CP} \times 100$$​​