the current birth rate per certain number of people is 32 , whereas corresponding death rate is 11 per same number of people . if the net growth rate in terms of population increase is 2.1 percent , find number of persons . ( initally )
sol . net growth on x = ( 32 - 11 ) = 21 . net growth on 100 = ( 21 / x ã — 100 ) % = 2.1 % . then x = 1000 answer : a
multiply(const_100, divide(subtract(32, 11), 2.1))