document.write( "Question 929078: It takes an older computer 4 times as long to send out a company’s email as it does a newer computer. Working together, it takes the two computers
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document.write( "10 minutes to send out the email. How long will it take the newer computer to send out the email on its own? \n" );
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Algebra.Com's Answer #564084 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! It takes an older computer 4 times as long to send out a company’s email as it does a newer computer. Working together, it takes the two computers \n" ); document.write( "10 minutes to send out the email. How long will it take the newer computer to send out the email on its own? \n" ); document.write( "------------------------- \n" ); document.write( "Together rate = 1/10 job/min \n" ); document.write( "--- \n" ); document.write( "Older computer rate = 1/(4x) job/min \n" ); document.write( "---- \n" ); document.write( "Newer computer rate = 1/x job/min \n" ); document.write( "--------------------------- \n" ); document.write( "Equation: \n" ); document.write( "rate + rate = together rate \n" ); document.write( "1/x + 1/4x = 1/10 \n" ); document.write( "Multiply thru by 20x to get: \n" ); document.write( "20 + 5 = 2x \n" ); document.write( "---- \n" ); document.write( "2x = 25 \n" ); document.write( "x = 12.5 minutes (time for the newer computer to do the job) \n" ); document.write( "--- \n" ); document.write( "4x = 50 minutes (time for the older computer to do the job) \n" ); document.write( "---------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------------ \n" ); document.write( " |