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It takes a pendulum of a clock 7 seconds to strike 4 o’clock. How much time will it take to strike 11 o’clock?

  1. 18 seconds 
  2. 20 seconds
  3. 19.25 seconds 
  4. 23.33 seconds
asked in Quantitative Aptitude by (7.7k points) 51 165 461
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1 Answer

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It is based on simple unitary method. 

To reach 4 o clock it takes   =    7s

Hence to reach 1 o'clock it takes  =  (7/4) s

Hence to reach 11 o'clock it takes   =   (77/4) s  =   19.25 s

Hence C) should be the correct answer.

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