a person crosses a 1000 m long street in 10 minutes . what is his speed in km per hour ?
"distance = 1000 meter time = 10 minutes = 10 x 60 seconds = 600 seconds speed = distance / time = 1000 / 600 = 1.67 m / s = 1.67 ã — 18 / 5 km / hr = 6.0 km / hr answer : d"
divide(divide(1000, const_1000), divide(multiply(10, const_60), const_3600))