document.write( "Question 235852: Ana has played 20 games and has a 90% winning percentage. Without losing any more games, how many more games in a row must she win to reach exactly a 92% winning percentage? \n" ); document.write( "

Algebra.Com's Answer #173645 by josmiceli(19441) $\"\"$ $\"About$

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So far, she has won
\n" ); document.write( " $\".9%2A20+=+18\"$ games
\n" ); document.write( "Let $\"x\"$ = the number of games in a row she must win
\n" ); document.write( " $\"%2818+%2B+x%29%2F%2820+%2B+x%29+=+.92\"$
\n" ); document.write( " $\"18+%2B+x+=+.92%2A%2820+%2B+x%29\"$
\n" ); document.write( " $\"18+%2B+x+=+18.4+%2B+.92x\"$
\n" ); document.write( " $\".08x+=+.4\"$
\n" ); document.write( " $\"x+=+5\"$
\n" ); document.write( "She must win 5 games in a row
\n" ); document.write( "check:
\n" ); document.write( " $\"%2818+%2B+x%29%2F%2820+%2B+x%29+=+.92\"$
\n" ); document.write( " $\"%2818+%2B+5%29%2F%2820+%2B+5%29+=+.92\"$
\n" ); document.write( " $\"23%2F25+=+.92\"$
\n" ); document.write( " $\"23+=+.92%2A25\"$
\n" ); document.write( " $\"23+=+23\"$
\n" ); document.write( "OK \n" ); document.write( "

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