Question

a train moving at a speed of 75 km per hour covers a certain distance in 4.8 hours .what should be the speed of the train to cover the same distance in 3 hours

Answer 1

1st case

speed - 75 km/hr

time- 4. 8 hours 

distance -speed ×time

75×4.8
=365 km 


2nd case 

distance -365

time -3 hours 

speed - distance ÷time 

365÷3
121.6km /hr

Answer 2

speed = distance / time

75/4.8 = 16.6 in one hour

in 3 hours 16.6*3 =49.8