Question

23. A man covers first 100 km of his journey at 50 km/hr, next 120 km at 54 km/hr
and last 30 km at 60km/hr. Find his average speed during the whole journey.
एक आदमी पहली 100 किमी, की यात्रा 50 किमी/घंटा, अगल 120 किमी, 54 /घंट :
किमी. 60 किमी / घंटा की गति से यात्रा करता है। पूरी यात्रा के दौरान उसळे अन्त गति :
कीजिए।​

Answer 1

Answer:

answer as follows

Step-by-step explanation:

a.v speed= total dis/total time

total dis=100+120+30=250km.

total time=100/50+120/54+30/60=x

Now a.v speed= 250/x=t

after repciprocaling,required answer will be

t m/s.

thanks.