document.write( "Question 766644: Anna is shooting at a target at a fair. If she hits the target she receives 50c, but if she misses she has to pay 20c for the shot. After 15 shots, Anna finds she has made a profit of $1.20. How many hits has she had? \n" ); document.write( "
Algebra.Com's Answer #467110 by josgarithmetic(39617)\"\" \"About 
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s = 15, how many shots
\n" ); document.write( "h = how many hits
\n" ); document.write( "m = how many misses\r
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\n" ); document.write( "\n" ); document.write( "Account for money: \"%2B50%2Ah-20%2Am=120\" cents
\n" ); document.write( "\"5h-2m=12\" when divided both sides by 10.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "s=15, so \"15=h%2Bm\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Solve the system:
\n" ); document.write( "\"highlight%285h-2m=12%29\" and \"highlight%28h%2Bm=15%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Could go like,
\n" ); document.write( "\"m=15-h\",
\n" ); document.write( "then
\n" ); document.write( "\"5h-2%2815-h%29=12\"
\n" ); document.write( "\"5h-30%2B2h=12\"
\n" ); document.write( "\"7h=12%2B30=42\"
\n" ); document.write( "\"h=6\" meaning \"m=9\"\r
\n" ); document.write( "\n" ); document.write( "RESULT: 6 hits and 9 misses.
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