The population of a town is 1,76,400. If it increases at the rate of 5% per annum, what will be its population 2 years
hence ? what was it 2 years ago ?
Population after 2 years = 176400 x `(1 + 5/100)^2 = (176400 xx 21/20 xx 21/40)` = 194481
Population 2 years ago = `(176400)/((1 +5/100)^2) = (176400 xx 20/21 xx 20/21)` = 160000
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