1.

A person travels from A to B at an average speed of x km/hr and returns from B to A at an average speed of y km/hr. His average speed during the total journey, is

A. \(\frac{x+y}{2xy}\)
B. \(\frac{2xy}{x+y}\)
C. \(\frac{2}{x+y}\)
D. \(\frac{1}{x}+\frac{1}{y}\)
Answer» C. \(\frac{2}{x+y}\)


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