document.write( "Question 175570: Rey can do a story in 3 hours while Joe can do it in 5 hours.In how many hours can the two boys do the work , if they worked together? \n" ); document.write( "
Algebra.Com's Answer #130655 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Rey can do a story in 3 hours while Joe can do it in 5 hours.In how many hours can the two boys do the work , if they worked together? \n" ); document.write( ": \n" ); document.write( "Let t = time required if they work together \n" ); document.write( ": \n" ); document.write( "Let the completed job = 1 (1 story) \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Multiply equation by a multiple of the two denominators, 15 will do this: \n" ); document.write( "15* \n" ); document.write( "5t + 3t = 15 \n" ); document.write( ": \n" ); document.write( "8t = 15 \n" ); document.write( "t = \n" ); document.write( "t = 1.875 hrs or 1 hr 52.5 minutes \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution, replace t with 1.875 in original equation: \n" ); document.write( " \n" ); document.write( ".625 + .375 = 1.00\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |