the present population of a town is 1000 . population increase rate is 20 % p . a . find the population of town after 2 years ?
"p = 1000 r = 20 % required population of town = p * ( 1 + r / 100 ) ^ t = 1000 * ( 1 + 20 / 100 ) ^ 2 = 1000 * ( 6 / 5 ) ^ 2 = 1440 ( approximately ) answer is a"
add(1000, divide(multiply(1000, 20), const_100))