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September 21, 2014

September 21, 2014

Posted by **Ken** on Thursday, December 4, 2008 at 1:50pm.

- Math -
**Reiny**, Thursday, December 4, 2008 at 2:36pm#1's rate = house/3

#2's rate = house/8

combined rate = house/3 + house/8

= 11house/24

so time for combined effort = house/(11house/24)

= 24/11 hours

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