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The rate at which the population of a ci...

The rate at which the population of a city increases at any time is propotional to the population at that time. If there were 1,30,000 people in the city in 1960 and 1,60,000 in 1990 what population may be anticipated in 2020.[loge(16/13)=.2070;e.42=1.52]

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