Friday
December 19, 2014

Homework Help: math

Posted by Kaley on Monday, March 16, 2009 at 9:31pm.

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house?

the answer is 2 hrs and 24 min. How did they come up with that?

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