Solution - Elementary Operation (Transformation) of a Matrix



      Forgot password?

View all notifications
Books Shortlist
Your shortlist is empty


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.


You need to to view the solution
Is there an error in this question or solution?

Question appears in these question papers

Similar questions

Express the following equations in the matrix form and solve them by method of reduction :

2x- y + z = 1, x + 2y + 3z = 8, 3x + y - 4z =1

view solution

Use elementary column operation C2 → C2 + 2C1 in the following matrix equation :


view solution

The sum of three numbers is 9. If we multiply third number by 3 and add to the second number, we get 16. By adding the first and the third number and then subtracting twice the second number from this sum, we get 6. Use this information and find the system of linear equations. Hence, find the three numbers using matrices.

view solution

The sum of three numbers is 6. When second number is subtracted from thrice the sum of first and third number, we get number 10. Four times the sum of third number is subtracted from five times the sum of first and second number, the result is 3. Using above information, find these three numbers by matrix method.

view solution

If `A=|[2,0,-1],[5,1,0],[0,1,3]|` , then find A-1 using elementary row operations

view solution