CAT Quantitative Ability Questions | CAT Averages, Ratio & Proportion questions
CAT/2004
Question . 70
A sprinter starts running on a circular path of radius r metres. Her average speed (in meters/minute) is πr during the first 30 seconds, πr/2 during next one minute, πr/4 during next 2 minutes, πr/8 during next 4 minutes, and so on. What is the ratio of the time taken for the nth round to that for the previous round?
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