After selling 85 copies of a book for every 100 copies printed, a publisher finds that 450 copies are left unsold. How many copies were printed?

A newspaper contains 12 pages.everyday 12,040 copies are printed.how many pages are printed everyday?

A newspaper is published everyday. It contains 16 pages. Every day 15,020 copies are printed. How many pages are printed every day?

12 copies of a book were sold for Rs. 1800/- thereby gaining cost-price of 3 copies. The cost price of a copy is :

A publisher printed 2000 copies of a book at a cost of Rs 70,000. He distributes 400 copies free as specimen copies . He gave 30% discount on printed price and the printed price of each book is Rs 75. What is his gain or loss percentage?

In a library, there are 6 copies of one book, 4 copies each of two different books, 5 copies each of three different books and 3 copies each of two different books. Find the number of ways of arranging all these books in a shelf in a single row.