document.write( "Question 1013142: Danny is older than Felicia. The difference between their ages is 3.: the sum of their ages is 37. How old is Danny? \n" ); document.write( "
Algebra.Com's Answer #629334 by fractalier(6550)\"\" \"About 
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call their ages d and f. Then we have
\n" ); document.write( "d - f = 3 and
\n" ); document.write( "d + f = 37 Now add these and get
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\n" ); document.write( "2d = 40
\n" ); document.write( "d = 20
\n" ); document.write( "f = 17
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