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Previous Year Paper

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CAT-2004-Previous Years Paper

Question
23 out of 35
 

A sprinter starts running on a circular path of radius r metres. Her average speed (in m/min) is ðr during the first 30 s, during next one min, during next 2 mins, during next 4 mins, and so on. What is the ratio of the time taken for the nth round to that for the previous round?



A 4
B 8
C 16
D 32

Ans. C

As options are independent of n let n = 2

Time taken for the first round + 1 + 2 + 4 = 7.5 min

Time taken for the second round = 8 + 16 + 32 + 64 = 120 min

Ratio = 16

CAT-2004-Previous Years Paper Flashcard List

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