M & N are two towns. A person covers the distance from M to N on cycle at 8.5 kmph and returns to M by a ferry running at a uniform speed of 4 kmph. What is his average speed for the whole journey?

4.44 kmph

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4.94 kmph

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5.44 kmph

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5.94 kmph

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6.44 kmph

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Solution

The correct option is C
5.44 kmph

When same distance is covered with different speeds, then the average speed = $\frac{2 x y}{x + y}$ = 5.44 kmph

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M & N are two towns. A person covers the distance from M to N on cycle at 8.5 kmph and returns to M by a ferry running at a uniform speed of 4 kmph. What is his average speed for the whole journey?

The correct option is C 5.44 kmph When same distance is covered with different speeds, then the average speed = 2xyx+y = 5.44 kmph

The correct option is C
5.44 kmph

When same distance is covered with different speeds, then the average speed = $\frac{2 x y}{x + y}$ = 5.44 kmph