document.write( "Question 984561: Currently, 1/4 of the members of a local club are boys, and there are 80 members. If no one withdraws from the club, what is the minimum number of boys that would need to join to make the club 1/3 boys? \n" ); document.write( "
Algebra.Com's Answer #605326 by josmiceli(19441)\"\" \"About 
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Let \"+n+\" = the number of boys that
\n" ); document.write( "are needed to join
\n" ); document.write( "-------------------
\n" ); document.write( "Currently, \"+%281%2F4%29%2A80+=+20+\" are boys
\n" ); document.write( "\"+%28+20+%2B+n+%29+%2F+%28+80+%2B+n+%29+=+1%2F3+\"
\n" ); document.write( "\"+3%2A%28+20+%2B+n+%29+=+80+%2B+n+\"
\n" ); document.write( "\"+60+%2B+3n+=+80+%2B+n+\"
\n" ); document.write( "\"+2n+=+80+-+60+\"
\n" ); document.write( "\"+2n+=+20+\"
\n" ); document.write( "\"+n+=+10+\"
\n" ); document.write( "-----------------
\n" ); document.write( "If 10 boys join the club, there will
\n" ); document.write( "be 1/3 boys
\n" ); document.write( "---------------
\n" ); document.write( "check:
\n" ); document.write( "\"+%28+20+%2B+n+%29+%2F+%28+80+%2B+n+%29+=+1%2F3+\"
\n" ); document.write( "\"+%28+20+%2B+10+%29+%2F+%28+80+%2B+10+%29+=+1%2F3+\"
\n" ); document.write( "\"+30+%2F+90+=+1%2F3+\"
\n" ); document.write( "\"+1%2F3+=+1%2F3+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );