A man buys 8 dozens of mangoes, 10 dozens of apples and 4 dozens of bananas. Mangoes cost Rs. 18 per dozen, apples Rs. 9 per dozen and bananas Rs 6 per dozen. Represent the quantities bought by a row matrix and the prices by a column matrix and hence obtain the total cost.

Ram bought 5 dozen mangoes ,8 dozen bananas and 4 dozen oranges , the cost price of mango banana and orange are Rs. 40, Rs, 25 and Rs. 20 per dozen ,Represent the fruits in row matrix and price of the fruits .

2 dozens of oranges cost Rs. 60. Find the cost of 120 similar oranges?

The cost of 3 oranges and 12 apples is Rs. 9.60 and the cost of 5 oranges and 7 apples is Rs. 6.90. Find the cost of apples per dozen.

Find the ratio of the price of pencil to that of ball pen, if pencil cost Rs.16 per score and ball pen cost Rs.8.40 per dozen.

Cost of 4 dozens bananas is Rs 60. How many bananas can be purchased for Rs 12.50?

A store has in stock 20 dozen shirts, 15 dozen trousers, and 25 dozen pair of socks. If the selling prices is Rs. 50 per shirt, Rs. 90 per trouser and Rs. 12 per pair of socks, then find the total amount the store owner will get after selling all the items in the stock.

A vendor buys oranges at Rs 26 per dozen and sells them at 5 for Rs 13. Find his gain percent.

A fruit-seller buys oranges at Rs 20 per dozen and sells them at a profit of 20%. Find the price paid by the customer for buying: 3 dozen oranges

Three shopkeepers A ,\ B\ a n d\ C go to a store to buy stationary. A purchases 12 dozen notebooks, 5 dozen pens and 6 dozen pencils. B purchases 10 dozen notebooks, 6 dozen pens and 7 dozen pencils. C purchases 11 dozen notebooks, 13 dozen pens and 8 dozen pencils. A notebook costs 40 paise, a pen costs Rs. 1.25 and a pencil costs 35 paise. Use matrix multiplication to calculate each individuals bill.

If 3 dozen oranges cost Rs 90 how many oragnes can be bought for Rs 225?