A publisher is planning to produce a new textbook. The fixed costs (reviewing, editing, typesetting and so on) are Rs 31.25 per book. Besides that, he also spends another Rs 320000 in producing the book. The wholesale price (the amount received by the publisher) is Rs 43.75 per book. How many books must the publisher sell to break even, i.e., so that the costs will equal revenues?

Answer

25600