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)![]() ![]() You can put this solution on YOUR website! 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( ": \n" ); document.write( "A typical shared work problem \n" ); document.write( ": \n" ); document.write( "let t = time required when they work together \n" ); document.write( "Let the completed job = 1 (the painting of the house) \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Multiply equation by the LCM to get rid of the denominators \n" ); document.write( "12* \n" ); document.write( "Results \n" ); document.write( "3t + 2t = 12 \n" ); document.write( "5t = 12 \n" ); document.write( "t = \n" ); document.write( "t = 2.4 hrs working together or; .4 * 60 = 24 min, so 2 hrs 24 min \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution in original equation: \n" ); document.write( " \n" ); document.write( ".6 + .4 = 1 \n" ); document.write( " |