document.write( "Question 1153814: \"A truck driver traveled at an average speed of 56 miles per hour on a 200-mile
\n" ); document.write( "trip to pick up a load of freight. On the return trip (with the truck fully
\n" ); document.write( "loaded), the average speed was 37 miles per hour. Find the average speed for the
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\n" ); document.write( "\n" ); document.write( "That is the question, and the answer is 44.6mi/hr.
\n" ); document.write( "But I don't know how to get to that answer. \n" ); document.write( "

Algebra.Com's Answer #776113 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "There is a general formula\r\n" );
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document.write( "     =  \r\n" );
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document.write( "for such problems.\r\n" );
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document.write( "Substitute your data into the formula and calculate.\r\n" );
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\n" ); document.write( "\n" ); document.write( "An amazing fact is that (from this formula point of view), the average speed DOES NOT depend on the total distance (!)\r
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\n" ); document.write( "\n" ); document.write( "It is THE SAME for any distance and any two-ways returning trip (!)\r
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\n" ); document.write( "\n" ); document.write( "In this sense, the given distance is IRRELEVANT (!) in this problem (!) (!)\r
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\n" ); document.write( "\n" ); document.write( "See the lessons\r
\n" ); document.write( "\n" ); document.write( " - Calculating an average speed: a train going from A to B and back \r
\n" ); document.write( "\n" ); document.write( " - One more problem on calculating an average speed \r
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