document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1204869>Question 1204869</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Lana is the oldest of four sisters. Her youngest sister is half her age. The other two sisters are twins 2 years younger than Lana. When the four sisters' ages are added together, the result is 45. If the youngest sister is n years old, what is n? </SPAN>\n" );
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document.write( "Let n be the age of the youngest.<br><BR>\n" );
document.write( "Then Lana's age is 2n.<br><BR>\n" );
document.write( "Then the age of each of the twins is 2n-2.<br><BR>\n" );
document.write( "The sum of all four ages is 45:<br><BR>\n" );
document.write( "(n)+(2n)+(2n-2)+(2n-2) = 45<BR>\n" );
document.write( "7n-4 = 45<BR>\n" );
document.write( "7n = 49<BR>\n" );
document.write( "n = 7<br><BR>\n" );
document.write( "ANSWER: The age of the youngest is 7<br><BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "youngest: n = 7<BR>\n" );
document.write( "Lana: 2n = 14<BR>\n" );
document.write( "1st twin: 2n-2 = 12<BR>\n" );
document.write( "2nd twin: 2n-2 = 12<BR>\n" );
document.write( "7+14+12+12=45<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );