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A person travels from P to Q with a speed of 20 km/hour and from Q to P with the speed of 30 km/hour, then the average speed of that person is (in km/hours) :
Correct Answer: (a)
Official keyThis question appeared in the NPSC Prelims 2018 examination (GS). It is Question 13 out of 200 questions in this paper.
This question was part of the NPSC Prelims 2018 (GS). The NPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all NPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.