document.write( "Question 1059533: Amy was born when Phil was 24 years old.
\n" ); document.write( "When Amy is 3 times as old as she is today, Phil will be 3 times as old as Amy.
\n" ); document.write( "How old is Phil today?
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Algebra.Com's Answer #674580 by MathTherapy(10552)\"\" \"About 
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Amy was born when Phil was 24 years old.
\n" ); document.write( "When Amy is 3 times as old as she is today, Phil will be 3 times as old as Amy.
\n" ); document.write( "How old is Phil today?
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Let Phil’s age be P, and Amy’s, A
\n" ); document.write( "Then A = P – 24\r
\n" ); document.write( "\n" ); document.write( "When Amy is 3 times her current age, she will be her current age, plus 2 times her current age, or P – 24 + 2A =====> P – 24 + 2(P – 24), or P – 24 + (2P – 48)
\n" ); document.write( "Therefore, Amy will be 3(P – 24), or 3P – 72, in (2P – 48) years
\n" ); document.write( "Also, in (2P – 48) years, Phil will be P + 2P – 48, or (3P – 48) years-old\r
\n" ); document.write( "\n" ); document.write( "We then get: 3P – 48 = 3(3P – 72)
\n" ); document.write( "3P – 48 = 9P – 216
\n" ); document.write( "3P – 9P = - 216 + 48
\n" ); document.write( "– 6P = - 168
\n" ); document.write( "P, or Phil is: \"highlight_green%28matrix%281%2C4%2C+%28-+168%29%2F%28-+6%29%2C+or%2C+28%2C+years-old%29%29\" \n" ); document.write( "
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