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Question

According to a census taken towards the end of the year 2009, the population of a rural town was found to be 64,000. The census authority also found that the population of this particular town had a growth of 5% per annum. In how many years after 2004 did the population of this town reach 74,088 ? 


Solution

Let the no. of years=n
According to the question 

P(1+R100)n=A

64000(1+5100)n=74088

(1+5100)n=7408864000
((2120)n=(2120)3


Equating the powers
n=3


Mathematics
Concise Mathematics
Standard IX

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