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January 28, 2015

January 28, 2015

Posted by **Sandy** on Wednesday, September 5, 2012 at 7:55pm.

- math -
**Reiny**, Wednesday, September 5, 2012 at 8:12pmA's rate = 1/6

B's rate = 1/8

combined rate = 1/6 + 1/8 = 7/24

time to fill with combined rate = 1/(7/24) = 24/7 minutes

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