Time and Distance | ParikshaChakra

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Time and Distance

Question 30 of 36

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Question 30

A car travels a certain distance at 40 km/hr and returns at 60 km/hr. Average speed is:

A. (a) 48 km/hr

B. (b) 55 km/hr

C. (c) 50 km/hr

D. (d) 45 km/hr

Explanation औसत चाल = 2xy/(x+y) = (2*40*60)/(40+60) = 4800/100 = 48 km/hr।

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