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December 18, 2014

December 18, 2014

Posted by **TinaG** on Monday, May 24, 2010 at 9:59pm.

When both copiers are used, they can copy a group of documents in 12 minutes.

How long would each copier require to do the copying alone

- algebra -
**bobpursley**, Monday, May 24, 2010 at 10:23pmlet T be the time for the reg copier to make one document, and T/3 the time for the HSpeed.

task= rate*time=

group= (group/T + 3group/T)*12

1/12= 4/T

T=48min

T/3=16min

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