document.write( "Question 215616: Lauren is shooting at a target in a fair. If she hits the target she receives 50p, if she misses she loses 20p. After 15 shots, Lauren she has made a profit of £1.20. How many hits has she had? \r
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document.write( "I know the answer is 6 (using trial and error) but I need the proper algebraic method for it please.\r
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document.write( "Thank you
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document.write( "Ronit \n" );
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Algebra.Com's Answer #163024 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Lauren is shooting at a target in a fair. \n" ); document.write( "If she hits the target she receives 50p, if she misses she loses 20p. \n" ); document.write( "After 15 shots, Lauren she has made a profit of £1.20. \n" ); document.write( " How many hits has she had? \n" ); document.write( ": \n" ); document.write( "Let x = no. of hits \n" ); document.write( "then \n" ); document.write( "(15-x) = no. of misses \n" ); document.write( ": \n" ); document.write( "50x - 20(15-x) = 120 pence \n" ); document.write( ": \n" ); document.write( "50x - 300 + 20x = 120 \n" ); document.write( ": \n" ); document.write( "50x + 20x = 120 + 300 \n" ); document.write( ": \n" ); document.write( "70x = 420 \n" ); document.write( "x = \n" ); document.write( "x = 6 hits \n" ); document.write( " |