Rajiv sells a pen at a profit of 5 percent. If he sells for Rs. 36 more, then he earns a profit of 14 percent. What is the cost price of the pen?

Rs. 600 Rs. 300 Rs. 500 Rs. 400

Rs. 400

First profit = 5% Second profit = 14% Difference in rupees between profits = 36 According to the question, (14 - 5) % of Cost Price = 36 9% of Cost Price = 36 100% of Cost Price = 400