document.write( "Question 358324: Martha is 2/3 of sarahs age,their combined age is 15, how old is each girl \n" ); document.write( "
Algebra.Com's Answer #255716 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" );
document.write( "Hi,
\n" );
document.write( "Let x be Sarah's age.  Then Martha's age is (2/3)x
\n" );
document.write( "\"x+%2B+%282%2F3%29x+=+15\"
\n" );
document.write( "3x + 2x = 45
\n" );
document.write( "5x = 45
\n" );
document.write( "x = 9
\n" );
document.write( "Sarah is 9 and Martha is 6
\n" );
document.write( "checking our answer
\n" );
document.write( "9 + 6 = 15 \n" );
document.write( "
\n" );