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17 January, 23:14

A propeller revolves 468 times in 52 s. How long will it take the propeller to revolve 756 times?

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Answers (2)
  1. 18 January, 00:51
    0
    It would take 84 seconds for the propeller to revolve 756 times.

    756 / 468 = 1.6154

    1.6154 * 52 seconds = 84 seconds or 1 minute 24 seconds

    If the problem asks for the number of revolution in one minute. then.

    1 minute = 60 seconds

    52 s / 60 s = 0.8666

    468 times : 0.8666 = 540 revolutions.
  2. 18 January, 01:01
    0
    The propeller revolves 9 times per second. so in 84 seconds it will have revolved 756 times.
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