1.

The population of a city increases at the rate of 10% per annum. Find the population of the city in the year 2007 if its population in 2005 was 2 crores.

Answer» Population in the year 2005, P=2 crores
Rate of increase =10%
Time period =2 years
`therefore` Population in 2007 `=P(1+(R )/(100))^(n)=20000000(1+(10)/(100))^(2)`
`=20000000xx1.21=24200000=2.42` crores.


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