document.write( "Question 460756: Please help me solve this problem:\r
\n" ); document.write( "\n" ); document.write( "A 210 ft. long rope is cut into 3 pieces. The first piece is 3 times as long as the second piece. The third piece is 2 times as long as the second piece. What is the length of the longest piece of rope?
\n" ); document.write( "a. 70 ft
\n" ); document.write( "b. 90 ft
\n" ); document.write( "c. 105 ft
\n" ); document.write( "d. 110 ft
\n" ); document.write( "e. 140 ft\r
\n" ); document.write( "\n" ); document.write( "Thanks!!!!
\n" ); document.write( "

Algebra.Com's Answer #316048 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Let x, y, and z be the lengths of the three pieces of rope.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Since \"The first piece is 3 times as long as the second piece\", we know that \"x=3y\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"The third piece is 2 times as long as the second piece\" tells us that \"z=2y\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now since the three pieces were cut from a 210 ft rope, this means that \"x%2By%2Bz=210\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now plug in \"x=3y\" and \"z=2y\" to get \"3y%2By%2B2y=210\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"6y=210\" Combine like terms on the left side.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=%28210%29%2F%286%29\" Divide both sides by \"6\" to isolate \"y\".\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y=35\" Reduce.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "This means that the second piece is 35 ft long.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now plug this into \"x=3y\" to get \"x=3%2835%29=105\". So the first piece (the longest piece) is 105 ft long.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "----------------------------------------------------------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The length of the longest piece of rope is 105 ft. So the answer is choice C)
\n" ); document.write( "
\n" );