A manufacturer produces three products A,B and C which he sells in market I and II. The annual sales are as shown below.(I) If the unit sale prices of A,B,C are Rs. 3, Rs. 2 and Rs. 4 respectively in market I and they are Rs. 4, Rs. 3 and Rs. 6 in market II. Find the total revenue in each market using matrix algebra.

A manufacturer produces three products A,B and C which he sells in market I and II. The annual sales are as shown below.(I) If the unit sale prices of A,B,C are Rs. 3, Rs. 2 and Rs. 4 respectively in market I and they are Rs. 4, Rs. 3 and Rs. 6 in market II. If the unit prices of A,B,C are Rs. 2.50, Rs. 1.50 and Rs. 3 respectively, then find the gross profit, using matrix algebra.

The cost of 2 books and 6 note books is Rs. 34 and the cost of 3 books and 4 note books is Rs. 31. Using the matrices, find the cost of one book and one note-book