document.write( "Question 1011936: Twenty students in a class play football and the remaining 10 play tennis. How many must change from tennis to football so that the percentage of the class which plays football is approximately 83%? \n" ); document.write( "
Algebra.Com's Answer #627757 by macston(5194)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "20 play football + 10 remaining = 30 total students
\n" ); document.write( "(0.83)(30)=24.9
\n" ); document.write( ".
\n" ); document.write( "For approximately 83% of 30 students to play football,
\n" ); document.write( "25 students must play football.
\n" ); document.write( "X=number of students who must change to football
\n" ); document.write( ".
\n" ); document.write( "20+X=25
\n" ); document.write( "X=5
\n" ); document.write( "ANSWER: Five students must change from tennis to football
\n" ); document.write( "for the percentage playing football to be approximately 83%.
\n" ); document.write( "
\n" );