document.write( "Question 291437: The ages of mother and son are in a ratio of 10:3. If the mother is 40 years old, how old is the son? \n" ); document.write( "
Algebra.Com's Answer #217336 by JBarnum(2146)\"\" \"About 
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10/3=40/x
\n" ); document.write( "10x=120
\n" ); document.write( "x=12
\n" ); document.write( "moms 40
\n" ); document.write( "son 12
\n" ); document.write( "
\n" );