Question

A car moves 5 km with 1/
speed 50 kmph, 10 km with
60 kmph and 15 km with
speed 70 kmph. What is the
average speed of the car​

Answer 1

Answer:

Average speed of the car= Total distance/total time

now T1= s/v= 5/50=1/10 Hour means 6 minutes

similarly T2= 10/60=1/6 hour = 10 minutes

T3= 15/70=3/14 hour =90/7 minutes means, 12.8 mins. means 13 minutes approx.

Average speed = 30/ 29 = 1.04 km/minute

now, you may convert this further to other units like km/h or m/s