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30 October, 06:17

on January 1,1980 a city had 100,000 people. During the year 1,000 people died, 2,000 babies were born, 3,000 people moved out, and 10,000 movied in. how many people were in the city by the end of 1980

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  1. 30 October, 08:15
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    By the end of 1980 there are 112,000 people in the city.

    Step-by-step explanation:

    Total number of people on January 1, 1980 = 100,000 people

    Number of people died during the year = 1,000

    So, during the year number of people alive

    = Total people - Number of people who died

    = 100,000 people - 1,000 people = 99,000 people

    Now, number of babies born during the year = 3,000

    So, during the year number of people alive

    = Total people left + Number of babies born

    = 99,000 people + 3,000 babies = 102,000 people

    Number of people who move in during the year = 10,000

    So, at the end of the year number of people in the country

    = Total people present + Number of people who moved in

    = 102,000 people + 10,000

    = 112,000 people

    or, the number of people present in the country = 112,000

    Hence, by the end of 1980 there are 112,000 people in the city.
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