document.write( "Question 344372: Write an equation which models how old, in years, a 27 year old will be when she is 3 times as old as a 12 year old person. \n" ); document.write( "

Algebra.Com's Answer #246448 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Write an equation which models how old, in years, a 27 year old will be when she
\n" ); document.write( " is 3 times as old as a 12 year old person.
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\n" ); document.write( "let n = number of years ago that this is true
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\n" ); document.write( "27 - n = 3(12 - n)
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\n" ); document.write( "27 - n = 36 - 3n
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\n" ); document.write( "-n + 3n = 36 - 27
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\n" ); document.write( "2n = 9
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\n" ); document.write( "n = $\"9%2F2\"$
\n" ); document.write( "n = 4.5 yrs ago
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\n" ); document.write( "Then he will he will be 27 - 4.5 = 22.5 yrs old
\n" ); document.write( "young person will be 12 - 4.5 = 7.5 yrs old
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\n" ); document.write( "3 * 7.5 = 22.5, the age of the older person
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