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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document.write( "Quick help would be appreciated, thanks a lot,
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document.write( "Cameron. \n" );
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Algebra.Com's Answer #114272 by edjones(8007) You can put this solution on YOUR website! Let x=number of games she bowled. \n" ); document.write( "Average=total scores of all games bowled / x \n" ); document.write( "178(x+1)=177x+199 \n" ); document.write( "178x+178=177x+199 \n" ); document.write( "x=21 number of games bowled to get 177 average. \n" ); document.write( "The 199 score was game #22 \n" ); document.write( ". \n" ); document.write( "Let y=the game score required to raise her average to 179. \n" ); document.write( "(178*22)+y=179*23 \n" ); document.write( "3916+y=4117 \n" ); document.write( "y=201 \n" ); document.write( ". \n" ); document.write( "Ed\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |