a person crosses a 800 m long street in 5 minutes . what is his speed in km per hour ?
"distance = 800 meter time = 5 minutes = 5 x 60 seconds = 300 seconds speed = distance / time = 800 / 300 = 2.67 m / s = 2.67 ã — 18 / 5 km / hr = 9.61 km / hr answer : e"
divide(divide(800, const_1000), divide(multiply(5, const_60), const_3600))