document.write( "Question 540666: During the first 20 miles of a 50 mile bicycle race, Roger's average speed was 16 mi/h. What must his average speed be during the remainder of the race if he is to finish the race in less than 2.5 hours? \n" ); document.write( "

Algebra.Com's Answer #353812 by josmiceli(19441) $\"\"$ $\"About$

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His time for the 1st 20 miles was
\n" ); document.write( " $\"+20+=+16%2At+\"$
\n" ); document.write( " $\"+t+=+1.25+\"$ hrs
\n" ); document.write( "He needs to finish in less than
\n" ); document.write( " $\"+2.5+-+1.25+=+1.25+\"$ hrs
\n" ); document.write( "also
\n" ); document.write( " $\"+50+-+20+=+30+\"$ mi
\n" ); document.write( "---------------
\n" ); document.write( " $\"+v+=+30%2F1.25+\"$
\n" ); document.write( " $\"+v+=+24+\"$
\n" ); document.write( "His speed must be greater than 24 mi/hr \n" ); document.write( "

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