A certain book shop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs. 80, Rs. 60, Rs. 40 each respectively. Using matrix algebra, find the total value of the books in the shop.

A certain bookshop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs80,Rs60 and Rs,40 each respectively. Find the total amount the bookshop will receive by selling all the books, using matrix algebra.

The marked price of a book is Rs. 180. In a book fare 15% of discount allowed. Then what is the selling price of that book in book fare?

The marked price of a book is Rs. 225. The publisher allows a discount of 10% on it. Find the selling price of it.

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?

Ramu and seetha purchased 15 note books and 10 note books respectively. The cost of each note book is Rs 15, then how much amount should they pay to the shop keeper?

A shop keeper earns a profit of Rs 5 on one note book and loss of Rs 3 on one pen by selling in the month of july. He sells 1500 books and 1500 pens. Find out what is his profit or loss.