document.write( "Question 1175717: A car travels at an average speed of 60 km/h from town A to town B .if the car travels at an average speed of 72 km/h instead ,it would reach Town B 15 minutes earlier .calculate the distance between town A and town B \n" ); document.write( "

Algebra.Com's Answer #801375 by ikleyn(52780) $\"\"$ $\"About$

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document.write( "Let d be the distance between the cities.\r\n" );
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document.write( "Write the \"time\" equation\r\n" );
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document.write( "     -  =    of an hour   (which is 15 minutes)\r\n" );
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document.write( "To solve it, multiply both sides by 360 (LCM of numbers 60, 72 and 4).  You will get\r\n" );
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document.write( "    6d - 5d = 90\r\n" );
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document.write( "       d    = 90.\r\n" );
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document.write( "ANSWER.  The distance is 90 kilometers.\r\n" );
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document.write( "CHECK.    =  =  =  of an hour.   ! Correct !\r\n" );
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