document.write( "Question 1101434: A man travels a distance at a speed of 12 km/h and returns at 9 km/h. If the total time taken by him is 3 h 30 min, find the distance he traveled one way. \n" ); document.write( "

Algebra.Com's Answer #716008 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Let D be the unknown distance under the question, in kilometers.\r\n" );
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document.write( "Then the time spent traveling at the speed 12 km/h is  hours.\r\n" );
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document.write( "     The time spent traveling at the speed  9 km/h is  hours.\r\n" );
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document.write( "The total time equation is \r\n" );
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document.write( " +  =    hours,   or\r\n" );
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document.write( " +  = .\r\n" );
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document.write( "Multiply by 36 both sides.  You will get\r\n" );
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document.write( "3D + 4D = 7*18,   or\r\n" );
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document.write( "7D = 7*18  ====>  D = 18 kilometers.\r\n" );
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document.write( "Answer. The one way distance is 18 km.\r\n" );
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