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Q.

A train runs from New Delhi to Hyderabad. It covers first distance of 420 km in 7 hours and next distance of 360 km in 6 hr. Find speed of train

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a

70 km/h

b

60 km/h

c

50 km/h

d

80 km/h

answer is A.

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Detailed Solution

Average speed=total distancetotal time

=78013=60 kmph

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