if a man walks to his office at ¾ of his usual rate , he reaches office 1 / 3 of an hour late than usual . what is his usual time to reach office ?
c 1 hour speed ratio = 1 : 3 / 4 = 4 : 3 time ratio = 3 : 4 1 - - - - - - - - 1 / 3 3 - - - - - - - - - ? 1 hour
divide(multiply(divide(3, const_4), divide(1, 3)), subtract(const_1, divide(3, const_4)))