Question

Sameer with the speed of 60 km per hour and returns in a speed of 40 km per hour find the average speed

Answer 1

$\mathcal{ANSWER}$

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Correct question :-

A man goes 60km at a speed of 50km/hr and returns back at a speed of 60km/hr Find the average speed of both journey.

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•Time taken in going$=$$\dfrac{Distance}{Speed}$

$\rightarrow$$=$$\dfrac{60}{50}$$=$$\dfrac{6}{5}$$hours$

•Time taken in returning =$\dfrac{Distance}{Speed}$$=$$1hour$

•Total time taken in both journey = ($\dfrac{6}{5}$+1)$hr=$$\dfrac{11}{5}$$hr$

•Total distance in both journeys = $(60+60)Km=120km$

Speed=$\dfrac{Total Distance}{Total Time}$$\dfrac{120}{11/5}$

$\rightarrow$$\dfrac{120×5}{11}$$=54.54km/hr$

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Hence, the average speed is $54.54km/hr$

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#answerwithquality

#BAL

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