Question

A car travels a distance of 150 km at the speed of 30 kmph. If it covers the ne×t 180 km of its journey at the speed of 60 kmph and last 80 km of its journey at the speed of40 kmph. What is the average speed of the car?

A 41 kmph
B 42 kmph
C 43kmph
D 44 kmph
E none of these
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