document.write( "Question 904931: if you leave you house at 5:20 a.m. to get to work, which is 20 miles away; if you drive 40 miles an hour, what time will you arrive at work? \n" ); document.write( "
Algebra.Com's Answer #548931 by MathLover1(20850)\"\" \"About 
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let's distance be \"d\", time \"t\", and speed \"s\"\r
\n" ); document.write( "\n" ); document.write( "if you leave you house at \"t%5B1%5D=5%3A20\" a.m. to get to work, which is \"d=20+miles\" away; if you drive \"s=40mph\",what time \"t%5B2%5D\", will you arrive at work
\n" ); document.write( "\"t=t%5B2%5D-t%5B1%5D+\" \r
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\n" ); document.write( "\n" ); document.write( "so, \"d=s%2At\" \r
\n" ); document.write( "\n" ); document.write( " \"d=s%2A%28t%5B2%5D-t%5B1%5D%29\" \r
\n" ); document.write( "\n" ); document.write( "given:
\n" ); document.write( "\"d=20mil\"
\n" ); document.write( "\"s=40%28mil%2Fh%29\"
\n" ); document.write( "\"t%5B1%5D=5%3A20=5h%2B20%2F60h=5h%2B0.33h=5.33h\" a.m.\r
\n" ); document.write( "\n" ); document.write( "\"d=s%2A%28t%5B2%5D-t%5B1%5D%29\" ...plug in given values\r
\n" ); document.write( "\n" ); document.write( "\"20mil=40%28mil%2Fh%29%2A%28t%5B2%5D-5.33h%29\" ...solve for \"t%5B2%5D\" \r
\n" ); document.write( "\n" ); document.write( "\"20cross%28mil%29%2F40%28cross%28mil%29%2Fh%29=%28t%5B2%5D-5.33h%29\"\r
\n" ); document.write( "\n" ); document.write( "\"0.5h=t%5B2%5D-5.33h\"\r
\n" ); document.write( "\n" ); document.write( "\"0.5h%2B5.33h=t%5B2%5D\"\r
\n" ); document.write( "\n" ); document.write( "\"5.83h=t%5B2%5D\"............... time that will you arrive at work\r
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\n" ); document.write( "\n" ); document.write( "so, \"t=t%5B2%5D-t%5B1%5D+\" \r
\n" ); document.write( "\n" ); document.write( "\"t=5.83h+-5.33h+\"
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\n" ); document.write( "\"t=0.5h\" or \"t=30min\"... time you will spend driving to work\r
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