Question

A train covers a distance of 400 kms in
5 hrs. If the speed is reduced by 20 km/hr
the time taken by it to cover the same dis-
tance is
1) 6 hrs. 40 mts.
2) 5 hrs.
3) 8 hrs.
4) 4 hrs. 40 mts.​

Answer 1

6 hour 40 minutes if the speed of train is reduced by 20 km per hour Som it will take 6 hour 40 minutes to cover the same distance of 400 km is a 6 hour 40 minutes

Answer 2

Answer:

d= 400km.

t= 5 hrs

speed 1= d/t

=400/5= 80 km/hr

speed is reduced by 20km/ hr

so speed 2= 80-20= 60km/hr

t= d/speed 2

t= 400/60

t= 6. 333..

so time taken to cover same distance= 3hrs 40 min. apprx.