The cost of 4 pencils, 3 pens and 2 books is Rs.150. The cost of 1 pencil, 2 pens and 3 books is Rs.125.The cost of 6 pencils , 2 pens and 3 books is Rs. 175. Find the cost of each item by using matrices.

The cost of 4 dozen pencils, 3 dozen pens and 2 dozen erasers is Rs 60. The cost of 2 dozen pencils, 4 dozen pens and 6 dozen erasers is Rs 90, whereas the cost of 6 dozen pencils, 2 dozen pens and 3 dozen erasers is Rs. 70. Find the cost of each item per dozen by using matrices.

The cost of the 4kg of potato,3kg wheat and 2kg rice is Rs.150.The cost of 1kg potato,2kg wheat and 3kg rice is Rs.125.The cost of 6kg potato,2kg wheat and 3kg rice is Rs.175.Find the cost per kg,by using Cramer's Rule

3 pencils and 4 pens cost Rs. 270 while 4 pencils and 3 pens cost Rs. 150 . Find the combined cost of one pencil and one pen.

The sum of the costs of one book each of Mathematics, Physics and Chemistry is Rs 210. Total cost of a mathematics book, 2 physics books, and a chemistry book is Rs. 240/- Also the total cost of a Mathematics book, 3 physics book and 2 chemistry books is Rs. 300/-. Find the cost of each book using matrices.

3 books and 10 pens together cost Rs 300. 2 books and 3 pens together cost Rs 145. Find the cost of 1 book and 3 pens.

The total cost of 8 books and 5 pens is Rs 420 and the total cost of 5 books and 8 pens is Rs 321. Find the cost of 1 book and 2 pens.