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A drives his car at 360 m/s. Moving ahea...

A drives his car at 360 m/s. Moving ahead for some hours his car breaks down. So he takes 20 seconds to fix it. Mean while he notices that another car which was 400 m back is now 200m ahead of his car. What is the speed of the car?

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The correct Answer is:
30 meter/sec. or 108 km/h
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