what is the rate percent when the simple interest on rs . 1600 amount to rs . 200 in 4 years ?
"interest for 1 year = 200 / 4 = 50 interest on rs 1600 p / a = 50 interest rate = 50 / 1600 * 100 = 3.125 % answer : b"
divide(multiply(const_100, 200), multiply(1600, 4))