defence exam CRPF Constable Tradesmen & Technical 2023 Mock Test Quantitative Aptitude Speed Time and Distance Average Speed
If a man travels at \(\frac{1}{x}\) km/h on a journey and returns at \(\rm \frac{1}{x^2}\) km/h, then his average speed for the journey is:
1
\(\rm \frac{x+1}{x^2}\)
2
\(\rm \frac{2}{x+x^2}\)
3
\(\rm \frac{1}{x+x^2}\)
4
\(\rm \frac{2x^2}{x+1}\)