. 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 ?

Explanation

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`