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Q: If the hands of a clock coincide every 66 minutes, how much time does the clock gain/loss per day?
A. 11(129/131) B. 14(119/121)
C. 11(109/121) D. 14(109/131)

Answer and Explanation

Answer:11(109/121)

Explanation:
In a clock showing correct time the hands coincide after every 65 5/11
=> Minutes. If the hands coincide every 66 minutes, it take 66 minutes to cover
     65 5/11 minutes of correct time.
=> It is losing time. It loses 6/11 minutes every 66 minutes.
=> In a day it loses       ( 6/11)
                               66 * (24)(60)

=>  11(109/121) minutes

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