document.write( "Question 331679: Simone can assemble a radio in 4 hours, and Sheila can assemble the same model radio in 7 hours. How long would it take them to assemble one radio if they worked together? \n" ); document.write( "
Algebra.Com's Answer #237774 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Simone can assemble a radio in 4 hours, and Sheila can assemble the same model radio in 7 hours. How long would it take them to assemble one radio if they worked together? \n" ); document.write( ". \n" ); document.write( "Let x = time it takes for them to work together \n" ); document.write( "then \n" ); document.write( "x(1/4 + 1/7) = 1 \n" ); document.write( "multiplying both sides by 28: \n" ); document.write( "x(7 + 4) = 28 \n" ); document.write( "11x = 28 \n" ); document.write( "x = 28/11 \n" ); document.write( "x = 2.55 hours \n" ); document.write( "or \n" ); document.write( "x = 2 hours and 33 minutes \n" ); document.write( " |