document.write( "Question 1122253: Assuming the speed of sound is 344 m/s
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Algebra.Com's Answer #738329 by ikleyn(52776) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "I came to fix the solution given by @Boreal.\r
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document.write( "    The echo is twice the distance, out and back.\r\n" );
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document.write( "    So it took 2.35 seconds to reach the wall.  \r\n" );
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document.write( "    344 m/sec*2.35 sec= 808.4 m.             <<<---=== my editing is in  this line.\r\n" );
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