document.write( "Question 1042457: Bob wants to hike a 60-mile trail in the country. He could hike 10 mph for the first 2 hours and 30 mph the rest of the way or go 20 mph the whole way. Which is faster? By how much? \n" ); document.write( "

Algebra.Com's Answer #657452 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+d+\"$ = distance in miles traveled the first 2 hrs
\n" ); document.write( " $\"+d+=+10%2A2+\"$
\n" ); document.write( " $\"+d+=+20+\"$ mi
\n" ); document.write( "----------------
\n" ); document.write( "The rest of the way is:
\n" ); document.write( " $\"+60+-+20+=+40+\"$ mi
\n" ); document.write( " $\"+40+=+30%2At+\"$
\n" ); document.write( " $\"+t+=+4%2F3+\"$ hrs
\n" ); document.write( "-----------------
\n" ); document.write( "His total time doing it this way is:
\n" ); document.write( " $\"+2+%2B+4%2F3+=+10%2F3+\"$ hrs
\n" ); document.write( "( or 3 hrs and 20 min )
\n" ); document.write( "------------------------------
\n" ); document.write( "20 mi/hr the whole way:
\n" ); document.write( " $\"+60+=+20%2At+\"$
\n" ); document.write( " $\"+t+=+3+\"$ hrs
\n" ); document.write( "It is quicker to go 20 mi/hr the whole way \n" ); document.write( "

\n" );