A man takes total T hours to covers a certain distance at the speed of x km/hr and comes back at y km/hr. Find the distance.
Answer & explanation
Correct answer: option 1
Let the distance = d
ATQ,
⇒ \(\frac{d}{x}\) + \(\frac{d}{y}\) = T
⇒ d[\(\frac{x\;+\;y}{xy}\)] = T
⇒ d = \(\frac{xy}{x+y}\) × T