document.write( "Question 253125: Marvic is 20 years older than Fe.Seven years from now, Marivie will be thrice as old as Fe. Find their present ages.\r
\n" ); document.write( "\n" ); document.write( "*please answer my question with just one variable.,thnX \n" ); document.write( "
Algebra.Com's Answer #185363 by ankor@dixie-net.com(22740)\"\" \"About 
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Marvic is 20 years older than Fe.
\n" ); document.write( "Seven years from now, Marivie will be thrice as old as Fe.
\n" ); document.write( " Find their present ages.
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\n" ); document.write( "Let x = Fe's age
\n" ); document.write( "then
\n" ); document.write( "(x+20) = Marv's age
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\n" ); document.write( "In 7 yrs
\n" ); document.write( "(x+20) + 7 = 3(x + 7)
\n" ); document.write( ":
\n" ); document.write( "x + 27 = 3x + 21
\n" ); document.write( ":
\n" ); document.write( "27 - 21 = 3x - x
\n" ); document.write( ":
\n" ); document.write( "6 = 2x
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\n" ); document.write( "x = 3 yrs is Fe's age
\n" ); document.write( "and
\n" ); document.write( "3 + 20 = 23 yrs is Marv's age
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\n" ); document.write( "Check this in the statement:
\n" ); document.write( "\"Seven years from now, Marv will be thrice as old as Fe.\"
\n" ); document.write( "23 + 7 = 3(3 + 7)
\n" ); document.write( "30 = 3(10) \n" ); document.write( "
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