The cost of 4 dozen pencils, 3 dozen  pens and 2 dozen erasers is Rs. 60.  The cost
Channel: Doubtnut
Date: 2020-03-29

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.