evannedeseguira evannedeseguira
  • 19-11-2018
  • Mathematics
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One cooy machine can run off copies in 198 minutes. A newer machine can do the same job in 126 minutes. How long does it take the two​ machines, working​ together, to make all of the necessary​ copies?

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lil234
lil234 lil234
  • 19-11-2018
This depends on the necessary number of copies.
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