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

The rate at which the population of a city varies as the population at that time in period of 20 year population increased from 10 lakhs to 14 lakhs. Find the population in another 20 years.

Text Solution

Verified by Experts

Let rate of increase is `R%`.
Then,
`1400000 = 1000000(1+R/100)^20`
`=>(1+R/100)^20 = 14/10`
So, after another `20` years population will be,
`=1400000(1+R/100)^20`
`= 1400000**14/10 = 1960000`
So, population after another `20` years will be `19.6 Lakhs`.
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