document.write( "Question 1084285: A 1-km long army is in marching order at constant velocity. A corporal from rear end travels towards the head and back at once to the rear at the constant speed, meanwhile the army has gone 1-km distance. The distance traveled by the corporal is.? \n" ); document.write( "
Algebra.Com's Answer #698401 by ikleyn(52873)\"\" \"About 
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\n" ); document.write( "Answer. 2 (two) kilometers.\r
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\n" ); document.write( "\n" ); document.write( "For solution and similar problems, see the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Travel problem on a messenger moving back and forth along the marching army's column \r
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\n" ); document.write( "\n" ); document.write( "The simplest solution is to use the moving coordinate system attached to the marching column. Then the solution and the answer become obvious.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the section \"Word problems\", the topic \"Travel and Distance problems\".\r
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