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A man covers half of his journey at 6km/h and the remaining half at 3 km/h. His average speed is

19 km/h
24.5 km/h
34 km/h
43 km/h

Answer:- 1

Explanation:-

Solution:

\begin{aligned} Average speed \\ = \frac{2 x y}{(x + y)} \\ = \frac{2 \times 6 \times 3}{(6 + 3)} \\ = \frac{36}{9} \\ = 4 kmph \end{aligned}

$\eqalign{ & {\text{Average}}\,{\text{speed}} \cr & = \frac{{2xy}}{{\left( {x + y} \right)}} \cr & = \frac{{2 \times 6 \times 3}}{{\left( {6 + 3} \right)}} \cr & = \frac{{36}}{9} \cr & = 4\,{\text{kmph}} \cr}$

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", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "

Solution:

\begin{aligned} Average speed \\ = \frac{2 x y}{(x + y)} \\ = \frac{2 \times 6 \times 3}{(6 + 3)} \\ = \frac{36}{9} \\ = 4 kmph \end{aligned}

$\eqalign{ & {\text{Average}}\,{\text{speed}} \cr & = \frac{{2xy}}{{\left( {x + y} \right)}} \cr & = \frac{{2 \times 6 \times 3}}{{\left( {6 + 3} \right)}} \cr & = \frac{{36}}{9} \cr & = 4\,{\text{kmph}} \cr}$ ", "dateCreated": "7/24/2019 10:09:12 AM" } }

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