document.write( "Question 761227: Pat is 40 years older than his son Patrick. In 4 years, the sum of their ages will be 90. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #463109 by Alan3354(69443)\"\" \"About 
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Pat is 40 years older than his son Patrick. In 4 years, the sum of their ages will be 90. How old are they now?
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\n" ); document.write( "In 4 yrs:
\n" ); document.write( "the difference will be 40 --> x - y = 40
\n" ); document.write( "the sum will be 90 --> x + y = 90
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\n" ); document.write( "Add the 2 equations.\r
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