document.write( "Question 168280This question is from textbook Introductory Algebra
\n" ); document.write( ": The time t required to drive a fixed distance varies inversely as the speed r. It takes 5 hours at 55 mph to drive a fixed distance. How long would it take at 40 mph? \n" ); document.write( "

Algebra.Com's Answer #124025 by jojo14344(1513) $\"\"$ $\"About$

You can put this solution on YOUR website!
Since $\"t\"$ varies inversely to $\"r\"$ , it follows:
\n" ); document.write( " $\"t%5B1%5Dr%5B1%5D=t%5B2%5Dr%5B2%5D\"$
\n" ); document.write( "where---- $\"system%28t%5B1%5D=5hrs%2Ct%5B2%5D=t%5B2%5D%2Cr%5B1%5D=55mph%2Cr%5B2%5D=40mph%29\"$
\n" ); document.write( "Continuing,
\n" ); document.write( " $\"5%2A55=t%5B2%5D%2A40\"$
\n" ); document.write( " $\"275%2F40=t%5B2%5Dcross%2840%29%2Fcross%2840%29\"$
\n" ); document.write( " $\"highlight%28t%5B2%5D=6.875hrs%29\"$ ---> 6 hrs & 52.5 mins
\n" ); document.write( "*It make sense for $\"t\"$ to go up, since $\"r\"$ goes down,Varies Inversely.
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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