Question

a train moving at a speed of 60km/hr covers a certain distance in 7.5 hour what should be the speed of the train to covers the same distance in 6 hours

Answer 1

speed=distance /time.
distance=60*7.5 = 450Km
now speed=450/6=75Km/hr.

Answer 2

Speed of the train= 60km/h
Time=7.5 hr
Distance= speed* time= 60* 7.5= 450 Km

Now, Distance= 450 Km and Time= 6 hr.
                Speed= Distance/Time= 450/6= 75 Km/hr