document.write( "Question 567478: A woman jogs for 2 km at 8 km/h and then walks for 2 km at 6 km/h. What is the average speed for the entire trip \n" ); document.write( "

Algebra.Com's Answer #366542 by josmiceli(19441) $\"\"$ $\"About$

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Average speed is ( total distance ) / ( total time )
\n" ); document.write( " $\"+t%5B1%5D+=+2%2F8+\"$
\n" ); document.write( " $\"+t%5B1%5D+=+1%2F4+\"$ hr
\n" ); document.write( " $\"+t%5B2%5D+=+2%2F6+\"$
\n" ); document.write( " $\"+t%5B2%5D+=+1%2F3+\"$ hr
\n" ); document.write( "ave speed = $\"+%28+2+%2B+2+%29+%2F+%28+1%2F4+%2B+1%2F3+%29+\"$
\n" ); document.write( " $\"+4+%2F+%28+3%2F12+%2B+4%2F12+%29+\"$
\n" ); document.write( " $\"+4+%2F+%287%2F12%29+\"$
\n" ); document.write( " $\"+%2812%2F7%29%2A4+\"$
\n" ); document.write( " $\"+48%2F7+=+6.857+\"$ km/hr
\n" ); document.write( "check answer:
\n" ); document.write( "ave speed = $\"+%28+2+%2B+2+%29+%2F+%28+1%2F4+%2B+1%2F3+%29+\"$
\n" ); document.write( "ave speed = $\"+4+%2F+%28+.25+%2B+.333+%29+\"$
\n" ); document.write( "ave speed = $\"+4+%2F+.58333+\"$
\n" ); document.write( "ave speed = $\"+6.857+\"$ km/hr\r
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