document.write( "Question 1187239: Walking lights are placed around the perimeter of a rectangular garden 30 feet by 16 feet. and are placed 18 inches apart. How many lights are needed? \n" ); document.write( "
Algebra.Com's Answer #818192 by ikleyn(52788)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "Speaking formally,  it is unclear, what is the meaning of these words \" 18  inches apart \" in this problem.\r
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\n" ); document.write( "\n" ); document.write( "How we should understand these words for walking lights located near the corner points ?
\n" ); document.write( "Should we  (and/or can we)  cut the angles there ?\r
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\n" ); document.write( "\n" ); document.write( "Usually,  these words \" 18  inches apart \" mean  18  inches along the sides.\r
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\n" ); document.write( "\n" ); document.write( "The standard and traditional way to solve such problems is to calculate the perimeter and to divide it by the elementary distance.\r
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\n" ); document.write( "\n" ); document.write( "Then the quotient gives you the answer.\r
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\n" ); document.write( "\n" ); document.write( "But in this problem the perimeter is   2*(30+16) = 2*46 = 92 ft   and it is not divisible by  18  inches  (= 1.5 ft)  without the remainder,\r
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\n" ); document.write( "\n" ); document.write( "so the answer is  \" It is not possible formally satisfy the problem's requirements \".\r
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\n" ); document.write( "\n" ); document.write( "So,  I would say that the person who composed this problem,  did not take care to make this problem  SELF-CONSISTED.\r
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