document.write( "Question 1092453: Mrs Thompson has a son and daughter. She is twice as old as her son and her son is twice as old as her daughter. The total of their ages is 91 years. How old is her son? \n" ); document.write( "

Algebra.Com's Answer #707056 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "Let x be the daughter's age, in years.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Then her brother's age is 2x years.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Then Mrs Thompson age is 4x years.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The condition says that   x + 2x + 4x = 91,   or   7x = 91.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "=============> x = 91/7 = 13.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Answer.  Her son is 26 years old.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );