The population of a town increase 4 % annually but is decreased by emigration annually to the extent of (1/2)% .
what will be the increase percent in 2 years ?
Let original population = 100
population after 3 years = 100 x `(1 + (3 1/2)/(100))^3 = 100 xx 207/200 xx 207/200 xx 207/200` = 110.87
`:.` Increase = (110.87 - 100)% = 10.87% = 10.8%
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