document.write( "Question 749477: Amso can dig a hole in 6 hrs, Ndou candig the same hole in 4 hrs. How long would it take both Amso and Iblis to dig half a hole if they worked together? \n" ); document.write( "
Algebra.Com's Answer #455965 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Amso can dig a hole in 6 hrs, Ndou candig the same hole in 4 hrs. How long would it take both Amso and Iblis to dig half a hole if they worked together? \n" ); document.write( "------ \n" ); document.write( "Amso rate = 1/6 job/hr \n" ); document.write( "Ndou rate = 1/4 job/hr \n" ); document.write( "Together rate = 1/x job/hr \n" ); document.write( "----------------------------- \n" ); document.write( "Equation: \n" ); document.write( "rate + rate = together rate \n" ); document.write( "1/4 + 1/6 = 1/x \n" ); document.write( "------- \n" ); document.write( "3x + 2x = 12 \n" ); document.write( "----- \n" ); document.write( "5x = 12 \n" ); document.write( "x = 12/5 = 2.8 hrs (time to do the job together) \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================ \n" ); document.write( " |