document.write( "Question 120361: Two men, A and B, can paint a house in 8 days. A alone can paint it in 12 days. How long will B take to paint the house by himself. \r
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document.write( "I am unsure on how to solve this. All I know is that there is some formula to this that involves many proportions. Please help! \n" );
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Algebra.Com's Answer #88259 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Two men, A and B, can paint a house in 8 days. A alone can paint it in 12 days. How long will B take to paint the house by himself. \n" ); document.write( ": \n" ); document.write( "Let B = time required by B to paint the house by himself \n" ); document.write( ": \n" ); document.write( "Let the completed job = 1 \n" ); document.write( ": \n" ); document.write( "A simple equation: \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Multiply equation by 12B to get rid of the denominators \n" ); document.write( "12B* \n" ); document.write( "; \n" ); document.write( "Cancel out the denominators and you have: \n" ); document.write( "8B + 12(8) = 12B \n" ); document.write( ": \n" ); document.write( "8B + 96 = 12B \n" ); document.write( ": \n" ); document.write( "96 = 12B - 8B \n" ); document.write( ": \n" ); document.write( "96 = 4B \n" ); document.write( ": \n" ); document.write( "B = 96/4 \n" ); document.write( ": \n" ); document.write( "B = 24 days \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution: \n" ); document.write( " \n" ); document.write( " |