document.write( "Question 1145441: A boy measures a road as being 69.3km long, however, there is a -1% error in this measurement. What is the true length of the road? \n" ); document.write( "

Algebra.Com's Answer #805060 by ikleyn(52812) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Let x be the ACTUAL length of the road.\r\n" );
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document.write( "Then the problem says\r\n" );
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document.write( "    x - 0.01x = 69.3  kilometers.\r\n" );
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document.write( "or\r\n" );
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document.write( "    0.99x = 69.3  kilometers.\r\n" );
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document.write( "Then the actual length is   = 70.00000000000 kilometers.      ANSWER \r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "It is the correct answer and correct treatment of the problem.\r
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\n" ); document.write( "\n" ); document.write( "The treatment in the post by @CubeyThePenguin is NOT CORRECT.\r
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\n" ); document.write( "\n" ); document.write( "Notice that his number of $\"69.3%2A%28101%2F100%29\"$ is 69.993 kilometers ------ NOT 70 kilometers.\r
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\n" ); document.write( "\n" ); document.write( "Also notice that this problem is not about treating of several centimeters or millimeters of the road -\r
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\n" ); document.write( "\n" ); document.write( "it is about using the Math conceptions properly.\r
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\n" ); document.write( "\n" ); document.write( "It is why I have written my post.\r
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