document.write( "Question 182797: Mara's father is 12 years older than twice her age. If last year he was exactly three times her age, how old are each now? \n" ); document.write( "
Algebra.Com's Answer #137298 by ankor@dixie-net.com(22740)\"\" \"About 
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Let M = Mara's age now
\n" ); document.write( "Let F = Father's age now
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement:
\n" ); document.write( "\"Mara's father is 12 years older than twice her age.\"
\n" ); document.write( "F = 2M + 12
\n" ); document.write( ":
\n" ); document.write( "\" If last year he was exactly three times her age,\"
\n" ); document.write( "F - 1 = 3M
\n" ); document.write( "F = 3M + 1
\n" ); document.write( ":
\n" ); document.write( "how old are each now?
\n" ); document.write( ":
\n" ); document.write( "Substitute (2M+12) for F in the above equation:
\n" ); document.write( "2M + 12 = 3M + 1
\n" ); document.write( "12 - 1 = 3M - 2M
\n" ); document.write( "M = 11 is Mara's present age
\n" ); document.write( "then
\n" ); document.write( "2(11) + 12 = 34 yrs is Father's present age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solution in the statement:
\n" ); document.write( "\"last year he was exactly three times her age,\"
\n" ); document.write( "34 - 1 = 3(11) \n" ); document.write( "
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