A man covers half of his journey at 6 km/h and the remaining half at 3 km/h. His average speed is
A. A. 9 km/h B. 4.5 km/h C. 4 km/h D. 3 km/h Answer: Option CShow Answer
Solution(By Apex Team)
Average Speed
$\begin{array}{l}
=\frac{2 x y}{x+y} \\
=\frac{2 \times 6 \times 3}{6+3} \\
=\frac{36}{9} \\
=4 \mathrm{kmph}
\end{array}$