document.write( "Question 468942: One machine can seal 360 packages/hr, an older machine can seal
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Algebra.Com's Answer #321728 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "We add their rates to get their combined rate:\r\n" );
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document.write( "360 + 140 = 500\r\n" );
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document.write( "1 hour is 60 minutes, so the problem is now:\r\n" );
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document.write( "If they can seal 500 packages in 60 minutes, how many\r\n" );
document.write( "minutes will it take them to seal 700 packages?\r\n" );
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document.write( "We set up the proportion: \r\n" );
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document.write( "500 packages     700 packages\r\n" );
document.write( "------------  = --------------\r\n" );
document.write( " 60 minutes        x minutes\r\n" );
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document.write( "Cross multiply\r\n" );
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document.write( "         500x = 42000\r\n" );
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document.write( "            x =  = 84 minutes\r\n" );
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document.write( "Edwin

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