Rekha takes 20 minutes to cover a distance of 3.2 kilometres on a bicycle. Calculate her speed in km/h.

$9.6 k m / h$

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$2.67 k m / h$

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$0.16 k m / h$

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$200 k m / h$

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Solution

The correct option is A
$9.6 k m / h$

Given:
Distance, $d = 3.2 k m$
Time taken:
$t = 20 min$
$t = 20 \times \frac{1}{60} h = \frac{1}{3} h$

Speed is given as the ratio of distance travelled to time taken.
$v = \frac{d}{t}$
$v = \frac{3.2 k m}{\frac{1}{3} h} = 9.6 k m / h$

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Rekha takes 20 minutes to cover a distance of 3.2 kilometres on a bicycle. Calculate her speed in km/h.

The correct option is A 9.6 km/h Given: Distance, d=3.2 km Time taken: t=20 min t=20×160 h=13 h Speed is given as the ratio of distance travelled to time taken. v=dt v=3.2 km13h=9.6km/h

The correct option is A
$9.6 k m / h$

Given:
Distance, $d = 3.2 k m$
Time taken:
$t = 20 min$
$t = 20 \times \frac{1}{60} h = \frac{1}{3} h$

Speed is given as the ratio of distance travelled to time taken.
$v = \frac{d}{t}$
$v = \frac{3.2 k m}{\frac{1}{3} h} = 9.6 k m / h$