Math

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In 1951, the population of India was 357 million people. By 1981 it had grown to 984 million. If the population is growing exponentially, when (in what month of what year) will the population reach 1 billion people?


How do you know what month?

-Reiny

  • Math -

    I think you are talking about this post
    http://www.jiskha.com/display.cgi?id=1283104183

    the answer was 30.477 years
    which means 30 years + .477 of the next year
    so I multiplied .477x12 (12 months)
    to get 5.7 months
    So for 5 months the 1 Billion has not been reached and we need the 6th month.

    jan = 1
    feb = 2
    ..
    may = 5
    june = 6

  • Math -

    I just reposted this again a couple seconds ago. Didn't see you helped me with this. Thanks for you help...

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