document.write( "Question 936802: raul scored 72% on a test and got 7 problems wrong. how many problems were on the test? \n" ); document.write( "
Algebra.Com's Answer #570312 by lwsshak3(11628)\"\" \"About 
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raul scored 72% on a test and got 7 problems wrong. how many problems were on the test?
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\n" ); document.write( "let x=number of problems on the test
\n" ); document.write( "x-7=number of problems raul got right
\n" ); document.write( "(x-7)/x=72%
\n" ); document.write( "x-7=.72x
\n" ); document.write( "x-.72x=7
\n" ); document.write( ".28x=7
\n" ); document.write( "x=7/.28=25
\n" ); document.write( "how many problems were on the test? 25
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