joel6024 joel6024
  • 24-02-2021
  • Mathematics
contestada

An older copying machine is found to take 15 minutes longer to copy a newsletter than a new model. If two of the older models and one of the newer models work together, the job takes 18 minutes. How long would it take for the newer model machine to copy the newsletter.​

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Аноним Аноним
  • 24-02-2021

Answer:

21 maybe?

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