A person travels from place ‘A’ to place ‘B’ at a speed of 40 km/hour

A person travels from place ‘A’ to place ‘B’ at a speed of 40 km/hour. While returning he increases his speed by 50%. What would be his average speed for the entire trip?
(a) 36 km/hour
(b) 45 km/hour
(c) 48 km/ hour
(d) 50 km/ hour

Anurag Mishra Professor Asked on 9th June 2016 in Maths.
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    Answer: (c) 48 km/hour

    Anurag Mishra Professor Answered on 9th June 2016.
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