A car travels from A to B at 40 km/h and returns at 60 km/h. What is the average speed?

A48 km/h

B50 km/h

C52 km/h

D55 km/h

Explanation

2xy/(x+y) = (2*40*60)/(100) = 4800/100 = 48.

Exam Relevance

Topic: Speed, Time & Distance
Subtopic: Average Speed

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