Question

A person walks from his house to his office at a speed of x₁ km/hr and returns by the same route at a speed of x₂ km/hr. What is his average speed ?

• A. \(\frac{x_1+x_2}{2}\)
• B. \(\frac{x_1+x_2}{2x_1x_2}\)
• C. \(\frac{2x_1x_2}{x_1+x_2}\)
• D. \(\frac{x_1+x_2}{x_1x_2}\)

Answer 1

The Correct Option is C

The correct option is (C):\(\frac{2x_1x_2}{x_1+x_2}\).