A car moves at a constant speed of 60 km/hr for 1 km and 40 km/hr for next 1 km. What is the average speed of the car ?
avg speed =
total distance
-----------------
total time
= (1+1)km/(1/60 + 1/40)hr
= 48 km/hr
total distance
-----------------
total time
= (1+1)km/(1/60 + 1/40)hr
= 48 km/hr