a man walking at a rate of 10 km / hr crosses a bridge in 3 minutes . the length of the bridge is ?
"speed = 10 * 5 / 18 = 50 / 18 m / sec distance covered in 5 minutes = 50 / 18 * 5 * 60 = 500 m answer is a"
multiply(divide(multiply(10, const_1000), const_60), 3)