1.

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

Answer»

7.2



distance = 600 meter
time = 5 MINUTES = 5 X 60 seconds = 300 seconds
Speed = distance/time = 600/300 = 2m/s
= 2×185 km/hr = 365 km/hr = 7.2 km/hr



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