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Thomas and Jerry have to stuff and mail 1000 envelopes for a new marketing campaign. Jerry can do the job alone in 6 hours. If Thomas helps, they can get the job done in 4 hours. How long would it take Thomas to do the job by himself?

 Sep 21, 2020
 #1
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1/6 + 1/x = 1/4

x = 12 hrs

 Sep 21, 2020
edited by ElectricPavlov  Sep 21, 2020

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