A shopkeeper buys a number of books for Rs.1200. If he had bought 5 less books for the same amount, each book would have cost him Rs.20 more. How many books did he buy?
I have this question found in my brother's tenth class book and unable to understand it.
I could not give a suitable title and since the problem is of Quadratic Equation, so the current title is obviously wrong. I shall appreciate if someone can give a suitable title and edit the same.