1.

. The population of a town is 176400, If it increases annually at 5 %,what will be its population 2 years hence? What was it 2 years ago ?

Answer» if the population is x.
new population after one year=>`x+x/20=(21x)/20`
new population after one more year=`(21x)/20+1/20xx(21x)/20=(441x)/400`
here x=176400 therefore new population after 2 years=>194481
now if `(441x)/400=176400`
then x=`160000`


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