A car moves through 20 km with a speed of 40 km per hour and next 20 km with a speed of 60 km per hour calculate its average speed
Answers
Answered by
3
Answer:
48 km/hr
Explanation:
distance 1= 20km
speed 1= 40km/hr
distance 2= 20km
speed 2= 60km/hr
time 1= 20/40= 1/2
time 2= 20/60= 1/3
avg speed= 20+20/1/2+1/3
=20+20/5/6= 40/5/6
40*6/5= 48km/hr
Similar questions