SOLUTION: To strike 5 o'clock a clock took 12 seconds. what time will it take to strike 11 o'clock? (please explain the method)

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Question 1045126: To strike 5 o'clock a clock took 12 seconds. what time will it take to strike 11 o'clock? (please explain the method)
Answer by Alan3354(69443) About Me  (Show Source):
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To strike 5 o'clock a clock took 12 seconds. what time will it take to strike 11 o'clock? (please explain the method)
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5 strikes --> 4 periods between strikes --> 12/4 = 3 second between strikes.
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11 --> 10 periods = 10*3 = 30 seconds