how much interest will $ 10,000 earn in 9 months at an annual rate of 4 % ?
soln : - 9 months = 3 / 4 of year ; 4 % = 4 / 100 = 1 / 25 ; $ 10,000 ( principal ) * 1 / 25 ( interest rate ) * 3 / 4 ( time ) = $ 300 . answer : a
multiply(multiply(power(const_100, const_2), divide(4, const_100)), divide(const_3, const_4))