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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. \(\frac{2}{x+y}\) | |