document.write( "Question 1108263: A rider on horseback travels from point Narnia to Archenland at an average speed of 20 miles/hour and returns at an average of 18 miles/hour. If the round trip takes 8 hours, find the distance between Narnia and Archenland. \n" ); document.write( "

Algebra.Com's Answer #723273 by ikleyn(52908) $\"\"$ $\"About$

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document.write( "Your \"time\" equation to find the distance d is\r\n" );
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document.write( " +  = 8   hours.\r\n" );
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document.write( "Each term (each ratio) in the left side is the time to cover the one way distance.\r\n" );
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document.write( "Multiplying both sides by 180 (common denominator) you get\r\n" );
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document.write( "9d + 10d = 8*180\r\n" );
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document.write( "19d = 1440  ====>  d =  = 75.789 miles (approx.)\r\n" );
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\n" ); document.write( "\n" ); document.write( "Be aware : The basic equation by @josgarithmetic is written incorrectly !\r
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