Question

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 1

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.

Answer 2

Distance between stations A and B=778km
distance covered by train
from A to B at per hour=84km
Distance covered back to A with a uniform speed at per hour=56km
Average speed of train during the whole journey=816272