document.write( "Question 118343: A wealthy old man is criticized for marrying a woman for he is three times her age. He wittily replies, \"Oh, but in 20 years time 2 shall only be twice her age.\" How old is the man and his wife? \n" ); document.write( "
Algebra.Com's Answer #86462 by ankor@dixie-net.com(22740)\"\" \"About 
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A wealthy old man is criticized for marrying a woman for he is three times her age. He wittily replies, \"Oh, but in 20 years time I shall only be twice her age.\" How old is the man and his wife?
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\n" ); document.write( "Let m = old man's age
\n" ); document.write( "Let g = girl's age
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\n" ); document.write( "\"he is three times her age.\"
\n" ); document.write( "m = 3g
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\n" ); document.write( "\"In 20 years time I shall only be twice her age.\"
\n" ); document.write( "(m+20) = 2(g+20)
\n" ); document.write( "m + 20 = 2g + 40
\n" ); document.write( "m = 2g + 40 - 20
\n" ); document.write( "m = 2g + 20
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\n" ); document.write( "\"How old are they?\"
\n" ); document.write( "Substitute 3g for m, find g
\n" ); document.write( "3g = 2g + 20
\n" ); document.write( "3g - 2g = 20
\n" ); document.write( "g = 20 yrs is the girls age
\n" ); document.write( "60 yrs is the old fart's age
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\n" ); document.write( "Check solution: in 20 yrs he will be 80 and she will be 40
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