Question 1182444
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the track is a 500m circuit. Ali practices running at a speed of 10kph. Ben practices cycling and travels at 25kph. 
How long does Ali take to run one lap?
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        Calculations in the post by @mananth, giving the time 185 seconds, are inaccurate. 

        They do not provide the necessary precision.

        I came to do the job properly.



<pre>
Time(Ali) = {{{distance/speed}}} = {{{0.5/10}}} = 0.05 of an hour = 0.05*3600 = 5*36 = 180 seconds = 3 minutes.


<U>ANSWER</U>.  Ali takes 180 seconds, or 3 minutes, for a lap.
</pre>

Solved correctly, properly and accurately.