a person crosses a 600 m long street in 2 minutes . what is his speed in km per hour ?
distance = 600 meter time = 2 minutes = 2 x 60 seconds = 120 seconds speed = distance / time = 600 / 120 = 5 m / s = 5 ã — 18 / 5 km / hr = 18 km / hr answer : c
divide(divide(600, const_1000), divide(multiply(2, const_60), const_3600))