A publisher is planning to produce a new textbook. The fixed costs are Rs. 320000 per book. Besides that, he also spends another Rs. 31.25 in producing the book. The wholesale price is Rs. 43.75 per book. How many books must the publisher sell to break even,i.e., so that the cost of production will equal revenues?

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?

The total cost of producing x transistor radio sets per day is (1/4x^2+35x+25) Rs and the selling price of each is (50-x/2) Rs. To obtain maximum profit the dialy output should be