1.

Distance between two stations A and B is 778km .A train covers the journey from A to B at 84 km per hour and return back to A with a uniform speed of 56 km per hour. Find the average speed of the train during the whole journey?

Answer»

HEYA MATE,

HERE IS UR ANSWER.

Thanks for ASKING this QUESTION.

The REQUIRED AVERAGE speed GIVEN by the formula,
Average speed =[2xy/(x+y)]km/hr.
Where,
x = 84 kmph.
y = 56 kmph.
Average speed, = [(2*84*56)/(84+56)]
= 67.2 kmph.

I HOPE IT HELPS U.


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