document.write( "Question 1119886: Please help me solve this of simple way. Thank You.\r
\n" ); document.write( "\n" ); document.write( "Three contractors (call them A, B, and C) bid on a project to build an addition to the UVA Rotunda. Suppose that you believe that Contractor A is 4 times more likely to win than Contractor B, who in turn is 7 times more likely to win than Contractor C. What are each of their probabilities of winning?\r
\n" ); document.write( "\n" ); document.write( "P(A Wins) =
\n" ); document.write( "P(B Wins) =
\n" ); document.write( "P(C Wins) =
\n" ); document.write( "

Algebra.Com's Answer #735529 by greenestamps(13215)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "Contractor C is the least likely to win. So let x be the probability that C wins.

\n" ); document.write( "Then \"contractor B is 7 times MORE likely to win than contractor C\" means the probability that contractor B wins is x + 7(x) = 8x.

\n" ); document.write( "Then \"contractor A is 4 times MORE likely to win than contractor B\" means the probability that contractor A wins is 8x + 4(8x) = 40x.

\n" ); document.write( "The sum of the probabilities must be equal to 1:

\n" ); document.write( "\"x+%2B+8x+%2B+40x+=+1\"
\n" ); document.write( "\"49x+=+1\"
\n" ); document.write( "\"x+=+1%2F49\"

\n" ); document.write( "The probability that C wins is x = 1/49.
\n" ); document.write( "The probability that B wins is 8x = 8/49.
\n" ); document.write( "The probability that A wins is 40x = 40/49.
\n" ); document.write( "
\n" );