document.write( "Question 315943: There are twice as many girls as boys in a class. 50% of the girls & 80% of the boys have finished their test, what percent of the students are still working on the test? \n" ); document.write( "
Algebra.Com's Answer #226006 by ankor@dixie-net.com(22740)\"\" \"About 
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There are twice as many girls as boys in a class.
\n" ); document.write( "Let x = no. of boys
\n" ); document.write( "then
\n" ); document.write( "2x = no. of girls
\n" ); document.write( "and
\n" ); document.write( "3x = total no. of students
\n" ); document.write( ":
\n" ); document.write( "50% of the girls & 80% of the boys have finished their test,
\n" ); document.write( ".5(2x) = x girls have finished
\n" ); document.write( ".8x boys have finished
\n" ); document.write( ":
\n" ); document.write( "what percent of the students are still working on the test?
\n" ); document.write( "x girls still working on the test
\n" ); document.write( ".2x boys still working on the test
\n" ); document.write( "then
\n" ); document.write( "\"%28x%2B.2x%29%2F%283x%29\" = \"%281.2x%29%2F%283x%29\" * 100 = 40% of the students still working\r
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