document.write( "Question 910318: John can paint his room in 5 hours; Toby can paint the same room in 8 hours. How long will it take if they work together? \n" ); document.write( "
Algebra.Com's Answer #552396 by ewatrrr(24785)\"\" \"About 
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\"1%2F5+%2B+1%2F7+=+1%2Fx\" |Multiplying thru by 35x so as all denominators = 1
\n" ); document.write( "7x + 5x = 35
\n" ); document.write( "12x = 35
\n" ); document.write( "x = 35/12 0r 2 11/12 hr 0r 2hr 55min
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