Home
Class 10
MATHS
The population of a village increase by ...

The population of a village increase by r% each year. If P be the population after n years, then population n years ago was

A

`P(1+r/100)^(-n)`

B

`P(1-r/100)^(-n)`

C

`P(1-r/100)^n`

D

`P(1-r/100)^(2n)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Statistics : Mean, Median, Ogive, Mode

    UNITED BOOK HOUSE|Exercise Exercise |29 Videos
  • SUJAPUR HIGH SCHOOL

    UNITED BOOK HOUSE|Exercise EXERCISE|55 Videos

Similar Questions

Explore conceptually related problems

The population of the village increases by r% each year. If P be the population aftern years, then population n years ago was

Current population of a village is P and rate of increase of the population per annum is 2r%. Then the population after n years will be____

The population of an area tends to increase when

The population of a state increases by 10% per 3 years. If the present population of the state be 3993000, then what was the population of the state before 6 years?

Fill n the blanks At present the population of village is P and if increased rate of populaton per year be R%, then the population was before N years______.

If the rate of increase in population is r% per year, the population after n years is p, find the population that was n years before.

If the rate of increase in population of is r% per year, the population after t years is p, Find the population that was t years before.

The population of a city increases by 5% per annum. If the present population of a city be 370440 then what was its population before 3 years?

UNITED BOOK HOUSE-SUGGESSTION OR MADHYAMIK PARIKSHA-EXERCISE
  1. The population of a village increase by r% each year. If P be the pop...

    Text Solution

    |

  2. Arpita invested Rs 500 for 9 months and Aparna invested Rs 600 for 5 m...

    Text Solution

    |

  3. If the roots of the equation ax^2+bx+c=0(a!=0) be equal then

    Text Solution

    |

  4. The product of (5-sqrt3)(sqrt3-1)(5+sqrt3)(sqrt3+1) is

    Text Solution

    |

  5. The length of each of two parallel chords AB and CD is 16cm. If the ra...

    Text Solution

    |

  6. AB is a diameter of a circle. C is any point on the circle, angleACB=

    Text Solution

    |

  7. If each of radius of the base and height of a cone be doubled, then th...

    Text Solution

    |

  8. In a right circular cylinder, if the length of radius is halved and he...

    Text Solution

    |

  9. If A+B = 90^@ and tanA = 3/4 then the value of cotB is

    Text Solution

    |

  10. If tanalpha+cot alpha = 2, then the value of tan^15 alpha+cot^15 alpha...

    Text Solution

    |

  11. If the median of arranging the ascending order of data 8,9,12,17,x+2,x...

    Text Solution

    |

  12. Mode of 11,8,2,8,10,11,7,9,8,13,16 is

    Text Solution

    |

  13. Fill in the blanks: Without any other conditions in a partnership bu...

    Text Solution

    |

  14. Fill in the blanks The compound interest and simpe interest for one ...

    Text Solution

    |

  15. Fill in the blanks If a:2 = b:5 = c:8 , then 50% of a = 20% of b=% ...

    Text Solution

    |

  16. If the roots of the equation ax^2+bx+c=0 (a!=0)are reciprocal to each ...

    Text Solution

    |

  17. Fill in the blanks The perpendicular bisector of any chord of a circ...

    Text Solution

    |

  18. Fill in the blanks Two triangles are similar if theirsides are prop...

    Text Solution

    |

  19. Fill in the blanks The shape of a pencil cutting one face is a combin...

    Text Solution

    |

  20. Fill in the blanks Number of surfaces of a solid hemisphere is.

    Text Solution

    |