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March 28, 2015

March 28, 2015

Posted by **john** on Monday, July 23, 2012 at 12:11am.

- math -
**Brooke**, Monday, July 23, 2012 at 12:43amAdd the two hours together.

- correction - math -
**Reiny**, Monday, July 23, 2012 at 8:14amBrooke's answer makes no sense

Frank's rate = 1/4

James rate = 1/6

combined rate = 1/4 + 1/6 = 5/12

time at combined rate = 1/(5/12)

= 12/5

= 2.4 hours

- math -
**sarah**, Thursday, January 22, 2015 at 3:44pm290*484-59385\6853]3763]= 1480264095740

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