document.write( "Question 151919: Tom's uncle owns a triangular piece of land. The perimeter fence that surrounds the land measures 378 yards. The shortest side is 30 yards longer than one-half of the longest side. THe second longest side is 2 yards shorter than the longest side. What is the length of each side? \n" ); document.write( "
Algebra.Com's Answer #111680 by Earlsdon(6294)\"\" \"About 
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Let's start by assigning letters to the three sides.
\n" ); document.write( "A = longest side.
\n" ); document.write( "B = second longest side.
\n" ); document.write( "C = shortest side.
\n" ); document.write( "The problem says that the perimeter (A+B+C) is 378 yards, so you can write:
\n" ); document.write( "\"A%2BB%2BC+=+378\"
\n" ); document.write( "The problem also states that the shortest side, (C), is 30 yards longer than one half of the longest side, (A), so you can express this as:
\n" ); document.write( "\"C+=+30%2B%281%2F2%29A\"
\n" ); document.write( "And, according to the problem statement, the second longest side (B) is 2 yards shorter than the longest side, so...
\n" ); document.write( "\"B+=+A-2\"
\n" ); document.write( "Now you can make the following substitutions into the first equation:
\n" ); document.write( "\"A%2BB%2BC+=+378\"
\n" ); document.write( "For B substitute A-2 and for C substitute \"30%2B%281%2F2%29A\", to get:
\n" ); document.write( "\"A%2B%28A-2%29%2B%2830%2B%281%2F2%29A%29+=+378\" Simplify and solve for A. Multiply through by 2 to clear the fraction.
\n" ); document.write( "\"2A%2B2%28A-2%29%2B2%2830%2B%281%2F2%29A%29+=+756\" Combine like-terms.
\n" ); document.write( "\"2A%2B2A-4%2B60%2BA+=+756\"
\n" ); document.write( "\"5A%2B56+=+756\" Subtract 56 from both sides.
\n" ); document.write( "\"5A+=+700\" Divide both sides by 5.
\n" ); document.write( "\"A+=+140\"
\n" ); document.write( "\"B+=+A-2\"
\n" ); document.write( "\"B+=+138\"
\n" ); document.write( "\"C+=+30%2B%281%2F2%29A\"
\n" ); document.write( "\"C+=+30%2B140%2F2\"
\n" ); document.write( "\"C+=+30%2B70\"
\n" ); document.write( "\"C+=+100\"
\n" ); document.write( "The sides are:
\n" ); document.write( "A (the longest side) = 140 yards.
\n" ); document.write( "B (the second longest side) = 138 yards.
\n" ); document.write( "C (the shortest side) = 100 yards.
\n" ); document.write( "Let's see if these add up to the given perimeter.
\n" ); document.write( "140+138+100 = 378 \r
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