A man buys a number of pens for Rs. 180. If he had bought 3 more pens for the same amount, each pen would have cost him Rs. 3 less. How many pens did he buy ?

A bookseller buys a number of books for Rs. 1760. If he had bought 4 more books for the same amount, each book would have cost Rs. 22 less. How many books did he buy?

A shopkeeper buys a number of books for Rs. 80, If he had bought 4 more books for the same amount, each book would have cost Rs 1 less. How many books did he buy?

A shopkeeper buys a number of books for Rs 80. If the had bought 4 more books for the same amount, each book would have cost Rs 1 less. How many books did he buy?

A shopkeeper buys a number of books for Rs 1200. If he had bought 10 more books for the same amount,each book would have cost him Rs20 less. How many books did he buy?

A shop keeper buys a number of books for Rs.80.If he had bought 4 more books for the same amount,each book would have cost his Rs.1 less.How many books did he buy?

A shop keeper buys a number of books for Rs.80. If he had bought 4 more books for the same amount, each book would have cost his Rs.1 less .How many books did he buy?

A person bought a certain number of pens for 800. If he had bought 4 pens more for the same money, he would have paid 10 less for each pen. How many pens did he buy?

A man purchased some pens at Rs. 8 each and some pencils at Rs. 2.50 each. If the total number of pens and pencils purchased is 27 and their total cost is Rs. 150, how many pens did he buy?