document.write( "Question 862969: Last year Ana spent the following:
\n" ); document.write( " 30% of her salary on rent
\n" ); document.write( " 2\5 of her salary on entertainment
\n" ); document.write( " 1\4 of her salary on living expenses.
\n" ); document.write( " Ana spent 7200 US Dollars in total.
\n" ); document.write( " She saved the rest of her salary.
\n" ); document.write( " Work out how much money she saved.
\n" ); document.write( "

Algebra.Com's Answer #520104 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Last year Ana spent the following:
\n" ); document.write( " 30% of her salary on rent
\n" ); document.write( " 2\5 of her salary on entertainment
\n" ); document.write( " 1\4 of her salary on living expenses.
\n" ); document.write( " Ana spent 7200 US Dollars in total.
\n" ); document.write( " She saved the rest of her salary.
\n" ); document.write( " Work out how much money she saved.
\n" ); document.write( "========================
\n" ); document.write( "Change it all to fractions.
\n" ); document.write( " 3/10 of her salary on rent
\n" ); document.write( " 2/5 of her salary on entertainment
\n" ); document.write( " 1/4 of her salary on living expenses.
\n" ); document.write( "Add them
\n" ); document.write( "3/10 + 2/5 + 1/4 = 6/20 + 8/20 + 5/20 = 19/20*S
\n" ); document.write( "(19/20)*S = 7200
\n" ); document.write( "S = 7200*20/19
\n" ); document.write( "------
\n" ); document.write( "She saved the remaining 1/20 of S = 7200/19
\n" ); document.write( "saved =~ $378.95
\n" ); document.write( "
\n" );