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Question

# A car covers the first half the distance between two places at 40 km/h another half at 60 km/h, the average speed of car50 km/h60 km/h40 km/h48 km/h

A
40 km/h
B
50 km/h
C
60 km/h
D
48 km/h
Solution
Verified by Toppr

#### The correct option is B 48 km/hLetx consider, x= total distance covered by the car,Time taken to complete the half distance with velocity v=40km/h,t1=x2×40=x80hr. . . . .(1)The time taken to complete another half distance with velocity u=60km/ht2=x2×60=x120hrThe total time taken, t=t1+t2t=x80+x120=x48hrThe average speed of the car, vavg=xx/48=48km/hThe correct option is B.

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