document.write( "Question 155211: This isn't a test or textbook question. Here is the question: Mary bowled 199 and this raised her average from 177 to 178. To raise her average to 179 with the next game, what must she bowl?
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Algebra.Com's Answer #114270 by scott8148(6628) $\"\"$ $\"About$

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the average is the sum of her scores (S) divided by the number of scores (n)\r
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\n" ); document.write( "\n" ); document.write( "initially, S/n=177 __ S=177n\r
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\n" ); document.write( "\n" ); document.write( "after 199, (S+199)/(n+1)=178 __ S+199=178n+178 __ substituting __ 177n+199=178n+178\r
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\n" ); document.write( "\n" ); document.write( "subtracting 177n+178 __ 21=n\r
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\n" ); document.write( "\n" ); document.write( "in order to raise her average one point, she scored 22 points above average in her 22nd game\r
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\n" ); document.write( "\n" ); document.write( "to raise her average another point, she will have to score 23 points above her average in her 23rd game\r
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\n" ); document.write( "\n" ); document.write( "178+23=201 \n" ); document.write( "

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