document.write( "Question 1143655: The mean of ages of 8 brothers is 2o but when the age of their mother is added, the mean age becomes 25. What is the age of their mother \n" ); document.write( "

Algebra.Com's Answer #764522 by ikleyn(52814) $\"\"$ $\"About$

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

\r\n" );
document.write( "\r\n" );
document.write( "Since the mean of 8 brothers is 20, the sum of their age is 8*20 = 160.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Now the equation to solve the problem is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "     = 25.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Solve it to find M, the mother's age.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "----------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "To see many other similar solved problems, look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average scores, weight, height and temperature\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average scores\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on average age \r
\n" ); document.write( "\n" ); document.write( "    - Miscellaneous problems on average values \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );