Home
Class 12
MATHS
The monthly incomes of Aryan and Babb...

The monthly incomes of Aryan and Babban are in the ratio 3 : 4 and their monthly expenditures are in the ratio 5 : 7. If each saves Rs. 15000 per month, find their monthly incomes using matrix method. This problem reflects which value?

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • ADJOINTS AND INVERSE OF MATRIX

    RD SHARMA ENGLISH|Exercise All Questions|181 Videos

  • ALGEBRA OF VECTORS

    RD SHARMA ENGLISH|Exercise All Questions|325 Videos

Similar Questions

Explore conceptually related problems

The monthly incomes of Aryan and Babban are in the ratio 3 : 4 and their monthly expenditures are in the ratio 5 : 7. If each saves Rs. 15,000 per month, find their monthly incomes using matrix method.

The monthly pocket money of Ravi and Sanjeev are in the ratio 5 : 7 . Their expenditures are in the ratio 3 : 5 . If each saves Rs. 80 every month, find their monthly pocket money.

The annual incomes of A and B are in the ratio 3:4 and their annual expenditures are in the ratio 5: 7. If each saves 5,000, find their annual incomes.

The monthly pocket money of Ravi and Sanjeev are in the ratio 5:7 . Their expenditures are in the ratio 3:5 . If each saves Rs 80 every month, find their monthly pocket money.

The incomes of X and Y are in the ratio of 8:7 and their expenditures are in the ratio 19 : 16 . If each saves Rs 1250, find their incomes.

The monthly incomes of A and B are in the ratio 3 : 2 , and the monthly expenditures of the two are in the ratio 4 : 3","Column B"),("Saving of A",,"Saving of B"):}

The ratio of incomes of two persons is 9:7 and the ratio of their expenditures is 4:3. If each of them saves Rs 200 per month, find their monthly incomes.

Mr. Sidhana saves 28% of his income. If he saves As 840 per month, find his monthly income.

The ratio of incomes of two persons is 9:7 and the ratio of their expenditures is 4:3 . If each of them manages to save Rs 2000 per month, find their monthly incomes.

A man spends 92% of his monthly income. If he saves Rs 220 per month, what is his monthly income?

RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
  1. There are two families A and B.In family A, there are 4 men, 6 women a...

    Text Solution

    |

  2. In a parliament election, a political party hired a public relations...

    Text Solution

    |

  3. The monthly incomes of Aryan and Babban are in the ratio 3 : 4 and ...

    Text Solution

    |

  4. A trust invested some money in two types of bonds. The first bond pays...

    Text Solution

    |

  5. If A=[-1// 2// 3] and B=[-2\ \ -1\ \ -4] , verify that (A B)^T=B^T\ A^...

    Text Solution

    |

  6. If A=[[costheta -sintheta], [[sinthe...

    Text Solution

    |

  7. If A=[(1 2 2)[, (2 1 -2),(a 2 b)] is a matrix satisfying A A^T=9I3 , t...

    Text Solution

    |

  8. Find the values of x,y,z if the matrix A=[[0,2y,z],[x,y,-z],[x,-y,z]] ...

    Text Solution

    |

  9. Let A=[(2,-3),(-7, 5)] and B=[(1, 0),( 2,-4)] , verify that (2A)^T=2A^...

    Text Solution

    |

  10. If A=[[3] , [ 5] , [2] ] and B=[1\ \ 0\ \ 4] , verify that (A B)^T=B^T...

    Text Solution

    |

  11. Let A=[1-1 0 2 1 3 1 2 1]a n dB=[1 2 3 2 1 3 0 1 1]dot Find A^T ,B^T a...

    Text Solution

    |

  12. If A=[[-2],[4], [5]], B=[[1 ,3,-6]], verify that (A B)' = B'A'.

    Text Solution

    |

  13. If A=[[2 , 4 ,-1] , [-1 , 0 , 2]] , B=[[3 , 4], [-1 ,2] , [ 2 ,1]] , ...

    Text Solution

    |

  14. For the matrices A and B , A=[[2 ,1 ,3 ] , [4 ,1 ,0 ]] , B=[[1 , -1] ,...

    Text Solution

    |

  15. For two matrices A and B , verify that (A B)^T=B^T\ A^T , where A=[[1 ...

    Text Solution

    |

  16. If A^T=[3 4-1 2 0 1] and B=[-1 2 1 1 2 3] , find A^T-B^T .

    Text Solution

    |

  17. If A=[[cosalpha,sinalpha],[-sinalpha,cosalpha]] , then verify that A^T...

    Text Solution

    |

  18. If A=[[sinalpha,cosalpha],[-cosalpha,sinalpha]], verify that A^T A=I2

    Text Solution

    |

  19. Let li,mi,ni; i=1,2,3 be the direction cosines of three mutually perpe...

    Text Solution

    |

  20. Show that the elements on the main diagonal of a skew-symmetric mat...

    Text Solution

    |