a man crosses a 600 m long street in 5 minutes . what is his speed in km per hour ?
speed = 600 / 5 * 60 = 2 m / sec converting m / sec to km / hr . = 2 * 18 / 5 = 7.2 km / hr answer is b
divide(divide(600, const_1000), divide(5, const_60))