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The sum of the costs of one book each of...

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.

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CHETANA PUBLICATION-Matrices-EXERCISE
  1. If A = [[3,1,],[4,0]], B = [[4,0],[2,5]] then verify that (AB)^-1 = B^...

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  2. If A = [[3,1],[-1,2]] then show that: A^2-5A+7I = 0 .

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  3. The sum of the costs of one book each of Mathematics, Physics and Chem...

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  4. Express the following equation in matrix form and solve them by the me...

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  5. Express the following equation in matrix form and solve them by the me...

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  6. Express the following equation in matrix form and solve them by the me...

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  7. Express the following equation in matrix form and solve them by the me...

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  8. Express the following equation in matrix form and solve them by the me...

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  9. By using inverse of a matrix, solve the following equations: 2x+5y = ...

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  10. By using inverse of a matrix, solve the following equations: x+2y-2z =...

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  11. Find the inverse of the matrix: [[1,2,3],[2,4,5],[3,5,6]]. Hence solve...

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  12. Nina and Meena want to buy pens and books. Nina wants 2 pens and 5 boo...

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  13. If three numbers are added the sum is 15. If the second number is subt...

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  14. In an election, a party hired a firm to promote its candidate in three...

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  15. A person has Rs. 30,000 to invest. He wants to invest some amount in t...

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  16. In a city there are two factories A and B. Each factory produces sport...

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  17. In a city there are two factories A and B. Each factory produces sport...

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  18. A manufacturer produces three products A,B and C which he sells in mar...

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  19. A manufacturer produces three products A,B and C which he sells in mar...

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  20. The televisions manufactured in a factory are stored in two warehouses...

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