The profit made on a product is 49%. What is the loss percentage (rounded up to two decimal places) incurred on the sale if the figures of both the cost price and selling price are interchanged?

Rohan has ₹\((3x^2 + 5xy + 7y^2)\) in his pocket. He spent ₹ \((2x^2 + 5xy + 4y^2)\) out of it. How much money is left with Rohan?
रोहन की जेब में ₹\((3x^2 + 5xy + 7y^2)\)हैं। उसने उसमें से ₹\((2x^2 + 5xy + 4y^2)\)खर्च कर दिए। रोहन के पास कितने रुपये शेष बचे हैं?