Home
Class 11
MATHS
Packet I consists of 3 pens, 2 pencils a...

Packet I consists of 3 pens, 2 pencils and I note book, Packet II consists of 2 pens, 3 pencils for and 1 notebook, Packet lII consists of I pen, 4pencils and 2 notebooks packet .If a pen costs of Rs10 , a pencil costs Rs 5 and a notebook costs Rs 20. Using matrices find the cost of packet II?

Text Solution

Verified by Experts

The correct Answer is:
Rs 55
Promotional Banner

Topper's Solved these Questions

  • MATRICES AND DETERMINANTS

    PREMIERS PUBLISHERS|Exercise SOLUTION TO EXERCISE 7.1|33 Videos

  • MATRICES AND DETERMINANTS

    PREMIERS PUBLISHERS|Exercise SOLUTION TO EXERCISE 7.2|21 Videos

  • INTRODUCTION TO PROBABILITY THEORY

    PREMIERS PUBLISHERS|Exercise PROBLEMS FOR PRACTICE (Choose the correct option for the following)|39 Videos

  • SETS,RELATIONS AND FUNCATIONS

    PREMIERS PUBLISHERS|Exercise II. Choose the correct option for the following. (M.C.Q)|35 Videos

Similar Questions

Explore conceptually related problems

5 pencils and 7 pens together cost Rs.50 whereas 7 pencils and 5 pens together cost rs.46 Find the cost of one pencil and that of one pen.

A metal box with a square base and vertical sides is to contain 1024 cm3 of water, the material for the top and bottom costs Rs 5 per cm2 and the material for the sides costs Rs 2.50 per cm2. Find the least cost of the box.

Reshma wishes to mix two types of food P and Q in such a way that the vitamin contents of the mixture contain atleast 8 units of vitamin A and 11 units of vitamin B. Food P costs Rs. 60// kg and food Q cost Rs. 80/kg. food P contains 3 units/ kg of vitamin A and 5 units/ kg of vitamin B while food Q contains 4 units/kg vitamin A and 2 units/kg of vitamin B. Determine the minimum cost of the mixture .

A dietician wishes to mix two types of foods in such a way that vitamin contents of the mixture contain atleast 8 units of vitamin A and 10 units of vitamin C. Food I' contains 2 units/kg of vitamin A and I unit/kg of vitamin C. Food 'Il' contains 1 unit/kg of vitamin A and 2 units/kg of vitamin C. It costs Rs 50 per kg to purchase food T and Rs 70 per kg to purchase food I'. Formulate this problem as a linear programming problem to minimise the cost of such a mixture.

A farmer mixes two brands P and Q of cattle feed. Brand P, costing Rs 250 per bag, contains 3 units of nutritional element A, 2.5 units of element B and 2 units of element C. Brand Q costing Rs 200 per bag, contains 1.5 units of nutritional element A, 1.25 units of element B, and 3 units of element C. The minimum requirements of nutrients A, B and Care 18 units, 45 units and 24 units respectively. Determine the number of bags of each brand which should be mixed in order to produce a mixture having a minimum cost per bag? What is the minimum cost of the mixture per bag?

PREMIERS PUBLISHERS-MATRICES AND DETERMINANTS-PROBLEMS FOR PRACTICE .(II CHOOSE THE CORRECT OPTION FROM THE FOLLOWING)
  1. Packet I consists of 3 pens, 2 pencils and I note book, Packet II cons...

    Text Solution

    |

  2. If a(ij)=i^(2)-j and A=(a(ij))(2xx2)is:

    Text Solution

    |

  3. Solve|(x-1,2),(3,x-2)|=0

    Text Solution

    |

  4. If 2x+[(3,1),(5,-3)]=[(-1,5),(3,-1)]then x is

    Text Solution

    |

  5. If A=[(3,2,1),(0,4,2),(1,2,3)]and B=[(3,2,0),(4,8,0),(-1,6,2)],then

    Text Solution

    |

  6. If the points (2,-4)(6,2)(4,x) are collinear than x is:

    Text Solution

    |

  7. If the square matrix |(alpha,Beta),(Beta,-alpha)|is a unit matrix of o...

    Text Solution

    |

  8. A=[(0,-2,1),(2,0,-4),(-1,0,0)]then A is

    Text Solution

    |

  9. If A=[(2x,2y,2z),(2a,2b,2c),(2p,2q,2r)]and Delta =[(x,y,z),(a,b,c),(p,...

    Text Solution

    |

  10. If A+2I=[(6,2),(3,-4)],then A(A+I)=

    Text Solution

    |

  11. Find the matrix A if[(1,2),(0,1)]A=[(6,1),(2,1)]

    Text Solution

    |

  12. Find the value of x for which A=[(e^(2x+1),e^(x-2)),(e^(2-x),e^(x-7))]...

    Text Solution

    |

  13. If A is (a(ij))(mxxn),B=(b(ij)(nxxp)),C=(c(ij)(pxxq))Then (ABC)^(T) wi...

    Text Solution

    |

  14. Ifr A is a skew symmetrix matrix of order 3 and B is column matrix of ...

    Text Solution

    |

  15. If A=[(2,4,-5),(3,1,-2),(0,2,-3)],find the coefficient of order 3:

    Text Solution

    |

  16. If A and B are square matrix of same order then (A-B)^(T) is:

    Text Solution

    |

  17. |((x+1/x)^(2),(x-1/x)^(2),1),((y+1/y)^(2),(y-1/y)^(2),1),((z+1/z)^(2),...

    Text Solution

    |

  18. Evaluate |(45,71,26),(35,-21,14),(77,50,40)|:

    Text Solution

    |

  19. if|(b+c,a-c,a-b),(b-c,c+a,b-a),(c-b,c-a,a+b)|=k(abc).Then k is:

    Text Solution

    |

  20. The area ofDelta with vertices (-2,-3),(3,2),and (-1,x).Then x is:

    Text Solution

    |

  21. Which of the followinf is not true about the matrix[(5,0,0),(0,0,0),(0...

    Text Solution

    |