document.write( "Question 180967This question is from textbook College Algebra
\n" ); document.write( ": Mr. Perry Winkle said \"I am twice as old as my son. Twenty Four years ago, I was four times as old as my son was\" How old is Mr Perry Winkle? \n" ); document.write( "
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Mr. Perry Winkle said \"I am twice as old as my son. Twenty Four years ago, I was four times as old as my son was\" How old is Mr Perry Winkle?
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\n" ); document.write( "Let x = P.W.'s age now
\n" ); document.write( "Let s = son's age now
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\n" ); document.write( "It says,\"I am twice as old as my son.\"; therefore:
\n" ); document.write( "x = 2s
\n" ); document.write( "or
\n" ); document.write( "s = .5x
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\n" ); document.write( "\"Twenty Four years ago, I was four times as old as my son was\"
\n" ); document.write( "x - 24 = 4(s - 24)
\n" ); document.write( "x - 24 = 4s - 96
\n" ); document.write( "x = 4s - 96 + 24
\n" ); document.write( "x = 4s -72
\n" ); document.write( "Replace s with (.5x)
\n" ); document.write( "x = 4(.5x) - 72
\n" ); document.write( "x = 2x - 72
\n" ); document.write( "x - 2x = -72
\n" ); document.write( "-x = -72
\n" ); document.write( "x = 72 yrs is P.W.'s age now
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\n" ); document.write( "Check solution in the statement (s = 36):
\n" ); document.write( "72 - 24 = 4(36 - 24)
\n" ); document.write( "48 = 4(12) \r
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