Home
Class 10
MATHS
A girl is twice as old as her sister. Fo...

A girl is twice as old as her sister. Four years hence, the product of their ages (in years) will be 160. Find their present ages.

Text Solution

Verified by Experts

Let the age of girls sisters be pf `x` years
Given that:
Girls is twice as old as her sister
Girl's that,after `4` years, the product of their ages will be `160`
...
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    RD SHARMA|Exercise All Questions|183 Videos

  • REAL NUMBERS

    RD SHARMA|Exercise All Questions|180 Videos

Similar Questions

Explore conceptually related problems

A woman is six times as old as her son.Two years ago,the product of their ages was 84. Find their present ages.

Rakhi's mother is four times as old as Rakhi. After 5 years, her mother will be three times as old as she will be then. Find their present ages.

Sam is 3 times as old as her little sister Jenny,but in 3 more years he will be twice as old as Jenny will be then.Find their present ages.

The sum of the ages of a man and his son is 45 years.Five years ago,the product of their ages was four xx the mans age at the time. Find their present ages.

Deepak is twice as old as his brother Vikas. If the difference of their ages be 11 years, find their present ages.

RD SHARMA-QUADRATIC EQUATIONS-All Questions
  1. The product of Ramu's age (in years) five years ago with his age (in ...

    Text Solution

    |

  2. One year ago, a man was 8 times as old as his son. Now his age is equa...

    Text Solution

    |

  3. A girl is twice as old as her sister. Four years hence, the product of...

    Text Solution

    |

  4. Seven years ago Varun’s age was five times the square of Swati’s age. ...

    Text Solution

    |

  5. While boarding an aeroplane, a passenger got hurt. The pilot showing p...

    Text Solution

    |

  6. While boarding an aeroplane, a passenger got hurt. The pilot showing p...

    Text Solution

    |

  7. A motor boat whose speed is 18 km/h m still water takes 1 hour more...

    Text Solution

    |

  8. While boarding an aeroplane, a passenger got hurt. The pilot showing p...

    Text Solution

    |

  9. Solve for: 4/x-3=5/(2x+3),x!=0,,-3/2

    Text Solution

    |

  10. Solve for: (x-4)/(x-5)+(x-6)/(-x-7)=10/3; x!=5,7

    Text Solution

    |

  11. Solve for : (5+x)/(5-x)-(5-x)/(5+x)=3 3/4; x!=5,-5

    Text Solution

    |

  12. Solve for : 3/(x+1)-1/2=2/(3x-1),x!=3/5,-1/7

    Text Solution

    |

  13. Solve for : 2/(x+1)+3/(2(x-2))=(23)/(5x);x!=0,-1,2

    Text Solution

    |

  14. Find the roots of the following equation 4x^2+4b x-(a^2-b^2)=0 by the ...

    Text Solution

    |

  15. Find the roots of the equation a^2x^2-3a b x+2b^2=0 by the method of c...

    Text Solution

    |

  16. Solve the equation x^2-(sqrt(3)+1)x+sqrt(3)=0 by the method of complet...

    Text Solution

    |

  17. Find the roots of the quadratic equations (if they exist) by the metho...

    Text Solution

    |

  18. Find the roots of the quadratic equations (if they exist) by the metho...

    Text Solution

    |

  19. If the roots of the equation x^2+2c x+a b=0 are real unequal, prove th...

    Text Solution

    |

  20. If p , q , ra n ds are real numbers such that p r=2(q+s), then show th...

    Text Solution

    |