Gautam travels $160 k m s$ at $32 k m p h$ and returns at $40 k m p h$ . Then average speed is

72 k m p h

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71.11 k m p h

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36 k m p h

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35.55 k m p h

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Solution

The correct option is D $35.55 k m p h$
Average speed $= \frac{160 + 160}{\frac{160}{32} + \frac{160}{40}} = \frac{320}{5 + 4} = \frac{320}{9}$
$= 35.55 k m / h r$ .

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Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then average speed is

The correct option is D 35.55 kmphAverage speed =160+16016032+16040=3205+4=3209=35.55 km/hr.

Gautam travels $160 k m s$ at $32 k m p h$ and returns at $40 k m p h$ . Then average speed is

The correct option is D $35.55 k m p h$
Average speed $= \frac{160 + 160}{\frac{160}{32} + \frac{160}{40}} = \frac{320}{5 + 4} = \frac{320}{9}$
$= 35.55 k m / h r$ .