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7 September, 11:52

A computer printer can print a 840-word document in 20 seconds. At this rate, how many seconds are required to print a document that contains 930 words?

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Answers (2)
  1. 7 September, 13:53
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    You can use the equation 840/20=930/x and then cross-multiply to get 18600=840x. Then just divide both sides by 840 to get 22.14
  2. 7 September, 14:36
    0
    930w (20s/840w) = 155s/7

    155s/7≈22.14 seconds (to nearest hundredth of a second)
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