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April 1, 2015

April 1, 2015

Posted by **dolores** on Tuesday, November 27, 2007 at 6:38pm.

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**Reiny**, Tuesday, November 27, 2007 at 7:02pmSam's rate = job/4

Lisa's rate = job/6

Tom's rate = job/2

time for all 3 working together

= job/(job/4 + job/6 + job/2)

= job/(11job/12)

= job * 12/(11job)

= 12/11

it would take them 1 1/11 days

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**dolores**, Tuesday, November 27, 2007 at 7:08pmthanks but the answer is 13 i just don't know how to get it.

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**Reiny**, Tuesday, November 27, 2007 at 7:33pmThe answer of 13 days would be totally illogical!

Gee, Tom working alone can do the job in 2 days, and then he even has help, so it would obviously take less than 2 days !!!!

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