A car travels first half distance between two places with a speed of 40 km/hr and rest of the half distance with a speed of 60 km/hr. The average speed of the car is: Choose the correct choice from the following answers:
A) 48 km/hr
B) 42km/hr
C) 40 km/hr
D) 35 km/hr
E) None of these
Explanation :   Let the total distance covered be S km.   The total time taken is:-   =&gt;S/(2×40)+S/(2×60)=5S/240.   Hence, the average speed = S×240/5S.   =&gt;48 km/hr.   48 km/hrnswer : 48 km/hr
<result>A</result>
A car travels first half distance between two places with a speed of 40 km/hr and rest of the half distance with a speed of 60 km/hr. The average speed of the car is: