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)\"\" \"About 
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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?
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\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
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\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1/4 + 1/6 = 1/x
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\n" ); document.write( "3x + 2x = 12
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\n" ); document.write( "5x = 12
\n" ); document.write( "x = 12/5 = 2.8 hrs (time to do the job together)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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