document.write( "Question 1183834: Hi
\n" ); document.write( "Sally walked halfway to school at 5km per hour. She then ran the rest of the way at 8km per hour. If she rode home at a speed of 40km per hour,what was her average speed to and from school.
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Algebra.Com's Answer #814322 by ikleyn(52787)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "            I will show you absolutely unexpected way to solve the problem\r
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document.write( "For the way to school (consisting of two equal parts), you can calculate the average speed on this part \r\n" );
document.write( "of the traveled distance using the formula\r\n" );
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document.write( "      v = \"%282%2A5%2A8%29%2F%285%2B8%29\" = \"80%2F13\"  km/h.\r\n" );
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document.write( "Now you have two other equal parts: the way to there and the way back.\r\n" );
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document.write( "These ways are of the same length, so you can apply similar formula for the entire trip to school and back\r\n" );
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document.write( "     w = \"%282%2A%2880%2F13%29%2A40%29%2F%2880%2F13%2B40%29\".\r\n" );
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document.write( "I leave calculations to you.\r\n" );
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document.write( "As the answer, you should get the same number as other tutors produced in their posts.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Regarding the formula, see my post at the link\r
\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1183833.html\r
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\n" ); document.write( "\n" ); document.write( "See also 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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