document.write( "Question 1073065: It takes John 12 hours to proof read a chapter of hawks learning systems it takes Philip three hours how long would it take them working together? Round your answer to two decimal places \n" ); document.write( "
Algebra.Com's Answer #687895 by josgarithmetic(39621)\"\" \"About 
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John's rate plus Philip's rate is their combined rate when proofreading together.\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F12%2B1%2F3\", in \"CHAPTER%2FHOURS\"\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F12%2B4%2F12\"\r
\n" ); document.write( "\n" ); document.write( "\"5%2F12\"\r
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\n" ); document.write( "\n" ); document.write( "HOURS per CHAPTER is \"12%2F5\";
\n" ); document.write( "\"2%262%2F5\"\r
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\n" ); document.write( "\n" ); document.write( "2 hours 24 minutes
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