document.write( "Question 443598: A box contains 5 red, 6 blue, 3 green, and 2 yellow crayons. How many red crayons must be added to the box so that the probability of randomly picking a red crayon is 2/3? \n" ); document.write( "
Algebra.Com's Answer #305912 by swincher4391(1107)\"\" \"About 
You can put this solution on YOUR website!
Our current probability is 5 reds / (5+6+3+2) crayons \r
\n" ); document.write( "\n" ); document.write( "or 5/16 .\r
\n" ); document.write( "\n" ); document.write( "Let x be the number of crayons needed to be added.\r
\n" ); document.write( "\n" ); document.write( "Then, \"%285%2Bx%29%2F%2816%2Bx%29+=+2%2F3\"
\n" ); document.write( "cross-multiply to get:\r
\n" ); document.write( "\n" ); document.write( "\"3%285%2Bx%29+=+2%2816%2Bx%29\"
\n" ); document.write( "\"15%2B3x+=+32+%2B+2x\"
\n" ); document.write( "\"highlight%28x+=+17%29\"
\n" ); document.write( "
\n" );