document.write( "Question 1035760: The age of a father is 10 less than the sum of the ages of his two sons. 7 years ago his age was 3 times the sum of the ages of his sons find their present ages \n" ); document.write( "

Algebra.Com's Answer #650404 by ikleyn(52800) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "The age of a father is 10 less than the sum of the ages of his two sons. 7 years ago his age was 3 times
\n" ); document.write( "the sum of the ages of his sons find their present ages
\n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "f = s - 10,       (1)\r\n" );
document.write( "f-7 = 3*(s-14).   (2)     <<<<--- \"14\" must be distracted, not \"7\" !\r\n" );
document.write( "\r\n" );
document.write( "--->  (s-10) -7 = 3s - 42\r\n" );
document.write( "\r\n" );
document.write( "s - 17 = 3s - 42,\r\n" );
document.write( "\r\n" );
document.write( "2s = 42 - 17 = 25.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "s = 12.5\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Hello, the author! \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "1. Change the data in your problem to allow \"s\" to be integer.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "2. From the given data it is impossible to determine the age of the two sons. Too few data.\r\n" );
document.write( "

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

\n" );