Home
Class 10
MATHS
The population of the village increases ...

The population of the village increases by r% each year. If P be the population aftern 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

None of these

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • QUESTION PAPER 2020

    UNITED BOOK HOUSE|Exercise Exercise |51 Videos

  • RAMKRISHNA MMISSION BOYS SCHOOL

    UNITED BOOK HOUSE|Exercise EXERCISE|54 Videos

Similar Questions

Explore conceptually related problems

The population of a village increase by r% each year. If P be the population after n 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____

Knowledge Check

  • The population of a village increases by 10% every year. If the present population of a village be 1000. the population after two years will be

    A
    1201
    B
    1100
    C
    1200
    D
    1210

  • The population of an area tends to increase when

    A
    Predators increase
    B
    Emigration occurs
    C
    Immigration increase
    D
    Reproductively decrease

  • The population of a city increases by 20% at the end of the following years will the population get doubled ?

    A
    second
    B
    third
    C
    fourth
    D
    fifth

    • Similar Questions

    Explore conceptually related problems

    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______.

    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?

    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 was 800000 before 3 years. If the population of the city increases by 5%, 6% and 7% in the last 3 years, then what is the present population of the city?

    Home
    Profile