document.write( "Question 182369: How do I figure out this question? If sally paints a house in 4 hours and sam does the same house in 6 hours, how long will it take them both to do the same house? \n" ); document.write( "
Algebra.Com's Answer #136870 by ankor@dixie-net.com(22740)\"\" \"About 
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If sally paints a house in 4 hours and sam does the same house in 6 hours, how long will it take them both to do the same house?
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\n" ); document.write( "A typical shared work problem
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\n" ); document.write( "let t = time required when they work together
\n" ); document.write( "Let the completed job = 1 (the painting of the house)
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\n" ); document.write( "\"t%2F4\" + \"t%2F6\" = 1
\n" ); document.write( "Multiply equation by the LCM to get rid of the denominators
\n" ); document.write( "12*\"t%2F4\" + 12*\"t%2F6\" = 12(1)
\n" ); document.write( "Results
\n" ); document.write( "3t + 2t = 12
\n" ); document.write( "5t = 12
\n" ); document.write( "t = \"12%2F5\"
\n" ); document.write( "t = 2.4 hrs working together or; .4 * 60 = 24 min, so 2 hrs 24 min
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\n" ); document.write( "Check solution in original equation:
\n" ); document.write( "\"2.4%2F4\" + \"2.4%2F6\" = 1
\n" ); document.write( ".6 + .4 = 1
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