Three workers can do a job in 28 hours. How many more workers are needed to do this job in 12 hours?

  1. 👍 1
  2. 👎 0
  3. 👁 457
  1. 12/28 as much time, so 28/12 as many workers.

    28/12 * 3 = 7

    1. 👍 1
    2. 👎 10

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