Question

Ramesh walked 6 km to reach the station from his house, then he boarded a train whose average speed was 60km/h and thus he reached his destimnation. in this way he took a total time of 3 hours. If the average speed of the entire journey was 32 km/h then the average speed of walking is:

Answer 1

Average speed of walking is 4 km/ hr

Answer 2

Solution:

Average speed of train = 60km/hr
Let t be the time taken by train.
Man covers 6km
total time=3 hrs
Average speed
= TOTAL Distance/ total time
Total distance= Average speed X time

6+60×t = 32x3
60t = 96-6
60t= 90
t = 90/60
=1.5 hour.

Walking speed of man= Distance/ time
Time taken by man is also 1.5 hr as total time is 3hr.
So ,
Average Walking speed of man=6/1.5
=60/15
=4km/hr
Therefore Average speed of walking is 4km/hr