document.write( "Question 1166067: The total traveling time if the Smiths drove y km at 60 km/h and on the return trip improved their average speed to 80 0 km/h . What is it simplest form \n" ); document.write( "

Algebra.Com's Answer #790551 by josgarithmetic(39620) $\"\"$ $\"About$

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y for both distances, because \"return trip\".
\n" ); document.write( "Assuming \"improved\" meant to be \"increased\".\r
\n" ); document.write( "\n" ); document.write( "Return trip, speed was INCREASED TO,...\r
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document.write( "                      SPEED       TIME         DISTANCE\r\n" );
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document.write( "first part             60                       y\r\n" );
document.write( "\r\n" );
document.write( "second part            80                       y\r\n" );
document.write( "\r\n" );
document.write( "totals\r\n" );
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\r
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\n" ); document.write( "\n" ); document.write( "Use $\"system%28RT=D%2CD%2FT=R%2CD%2FR=T%29\"$ .\r
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\n" ); document.write( "\n" ); document.write( "Find expression for the total traveling time:
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\r\n" );
document.write( "                      SPEED       TIME         DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "first part             60         y/60            y\r\n" );
document.write( "\r\n" );
document.write( "second part            80         y/80            y\r\n" );
document.write( "\r\n" );
document.write( "totals                       \r\n" );
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