CAT 1994 | Question: 68

Question

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?

• A. 18 seconds 
• B. 20 seconds
• C. 19.25 seconds 
• D. 23.33 seconds

Answer 1

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.