document.write( "Question 1134632: if a man walks a distance at 3 mph and jogs back the same route at 5 mph and the trip takes one hour how many miles did he travel \n" ); document.write( "
Algebra.Com's Answer #752094 by ikleyn(52810)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "There is ANOTHER way to solve the problem, and it's worth to know it.\r
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document.write( "Let  d  be one way distance.\r\n" );
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document.write( "Then the time to go \"there\" is  \"d%2F3\"  hours.\r\n" );
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document.write( "The time to go \"back\"  is  \"d%2F5\"  hours.\r\n" );
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document.write( "The total time is 1 hour, which gives you an equation\r\n" );
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document.write( "\"d%2F3\" + \"d%2F5\" = 1    hour.\r\n" );
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document.write( "To solve it, multiply both sides by 15. You will get\r\n" );
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document.write( "5d + 3d = 15,   or   8d = 15,   d = \"15%2F8\".\r\n" );
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document.write( "So, one way distance is  \"15%2F8\"   miles.\r\n" );
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document.write( "Hence, the total distance to \"there\" and \"back\"  is  twice \"15%2F8\" miles,  or  \"15%2F4\" mile = \"3\"\"3%2F4\" miles.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "As a comment to the @Alan3354's post, the Michelson-Morley experiment was performed for the first time in the year 1887 -
\n" ); document.write( "it is NOT the mid of the 17-th century; it is at the end of the 19-th century.\r
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\n" ); document.write( "\n" ); document.write( "See this Wikipedia article
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