Home
Class 12
MATHS
A shopkeeper has 3 varieties of pens ‘A’...

A shopkeeper has 3 varieties of pens ‘A’, ‘B’ and ‘C’. Meenu purchased 1 pen of each variety for a total of Rs. 21. Jeevan purchased 4 pens of ‘A’ variety, 3 pens of ‘B’ variety and 2 pens of ‘C’ variety for Rs. 60. While Shikha purchased 6 pens of ‘A’ variety, 2 pens of ‘B’ variety and 3 pens of ‘C’ variety for Rs. 70. Using matrix method, find cost of each variety of pen.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • EXAM REVISION SERIES

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise All Questions|19 Videos

Similar Questions

Explore conceptually related problems

A shopkeeper has 3 varieties of pens A, B and C . Meenu purchased 1 pen of each variety for a total of Rs 21. Jeen purchased 4 pens of A variety, 3 pens of B variety and 2 pens of C variety for Rs 60. While Shikha purchased 6 pens of A variety, 2 pens of B variety and 3 pens of C variety for Rs 70. Using matrix method find the cost of each pen.

Padma is a variety of

The wheat varieties are:

IR-8 variety belong to

Pusa Shubra is a variety of

A non cruciferae variety is:

A semi-dwarf variety of wheat is

Parbhani kranti is a variety of:

Maryland mammoth variety of tobacco is a

37 pens and 53 pencils together cost Rs. 320, while 53 pens and 37 pencils together cost Rs. 400. Find the cost of a pen and that of a pencil.

XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions
  1. If A=[[1,-1],[ 2,-1]] and B=[[a,1],[b,-1]] and (A+B)^2=A^2+B^2, then f...

    Text Solution

    |

  2. Three machinesE1, E2 and E3 in a certain factory producing electric...

    Text Solution

    |

  3. A shopkeeper has 3 varieties of pens ‘A’, ‘B’ and ‘C’. Meenu purcha...

    Text Solution

    |

  4. Using properties of determinants, show that ABC is isosceles if |(1,1,...

    Text Solution

    |

  5. A trust invested some money in two type of bonds. The first bond pays...

    Text Solution

    |

  6. If cos^(-1)(x/a) + cos^(-1) (y/b) = a show that : (x^2)/(a^2) - (2xy...

    Text Solution

    |

  7. Find : int(3x+1)sqrt(4-3x-2x^2)dx

    Text Solution

    |

  8. Form the differential equation of the family of circles in the second ...

    Text Solution

    |

  9. Solve the differential equation : y+x(dy)/(dx)=x-y(dy)/(dx)

    Text Solution

    |

  10. Prove that the least perimeter of an isosceles triangle in which a cir...

    Text Solution

    |

  11. Evaluate: int(x^2)/(x^4+x^2-2)\ dx

    Text Solution

    |

  12. If the sum of lengths of hypotenuse and a side of a right angled tr...

    Text Solution

    |

  13. Find the position vector of the foot of perpendicular and the perpe...

    Text Solution

    |

  14. Prove that the curves y^2=4x and x^2=4y divide the area of square b...

    Text Solution

    |

  15. Evaluate the following int0^(3/2)|xcospix\ |\ dxdot

    Text Solution

    |

  16. Evaluate : int0^(pi/2)(sin^2x)/(sin x+cos x)dx

    Text Solution

    |

  17. In a game, a man wins Rs. 5 for getting a number greater than 4 and ...

    Text Solution

    |

  18. An urn contains 4 balls. Two balls are drawn at random from the urn...

    Text Solution

    |

  19. There are two types of fertilisers A and B. A consists of 12% nitro...

    Text Solution

    |

  20. Solve the equation of x:sin^(-1)x+sin^(-1)(1-x)=cos^(-1)x

    Text Solution

    |