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Q if wheel of engine is train is 427meters in circumference makes seven revolution in 4 seconds then find speed of train
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Explanation:
Circumference of the wheel =472=730 m
In 3 sec, the wheel makes 7 revolution,
Thus, distance traveled by wheel in 3 sec =7×730 =30 m.
Thus, speed of the train =330m/sec
=10m/sec
=100010×60×60km/hr
=36km/hr
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the question should be 42/7
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