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An athlete runs 200 meters race in 24 seconds. His speed in km/h is
Answer & Solution
Correct Answer:
Option
D
$$\eqalign{
& {\text{Speed of athlete}}, \cr
& = \frac{{200\,{\text{m}}}}{{24\,{\text{secs}}}} \cr
& = \frac{{200 \times 18}}{{5 \times 24}} \cr
& = 30\,{\text{km/hour}} \cr} $$
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Login18/5 is use for converting meter/seconds into kilometer/hour. Actually its come from 3600/1000.