Question

from Delhi to Panipat at 36 kilometre per hour and from Panipat to Karnal at 72 kilometre its average speed​

Answer 1

Answer:

The answer is 48km/h

Explanation:

Let the time be x, then:-

Case 1:-

avg. speed= 36 kmph  , distance = s  ,  time = x

v=s/t      36=s/x        x=s/36 -------------------------- eq.1

Case 2:-

avg. speed= 72km/h , distance = s , time= x

then do the above procedure then the answer will be

x=s/72------------------------------------------------eq.2

Average speed=total distance covered/total time taken

                        =s+s/s/72+s/36

                       =2s/3s/72

                     = 48 km/h.

Hope it helps you.