document.write( "Question 756733: A movie star, unwilling to give his age, posed the following riddle to a gossip columnist: \"5 years ago, I was 12 times as old as my daughter. Now I am 7 times as old as she is.\" How old is the movie star? \n" ); document.write( "
Algebra.Com's Answer #460420 by ankor@dixie-net.com(22740)\"\" \"About 
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Let a = Star's present age
\n" ); document.write( "Let d = Daughter's present age
\n" ); document.write( ":
\n" ); document.write( "Write an equation and simplify it, for each statement.
\n" ); document.write( ":
\n" ); document.write( "\"5 years ago, I was 12 times as old as my daughter.\"
\n" ); document.write( "a - 5 = 12(d-5)
\n" ); document.write( "a - 5 = 12d - 60
\n" ); document.write( "a = 12d - 60 + 5
\n" ); document.write( "a = 12d - 55
\n" ); document.write( ":
\n" ); document.write( "\"Now I am 7 times as old as she is.\"
\n" ); document.write( "a = 7d
\n" ); document.write( "replace a with (12d-55)
\n" ); document.write( "12d - 55 = 7d
\n" ); document.write( "12d - 7d = 55
\n" ); document.write( "5d = 55
\n" ); document.write( "d = 55/5
\n" ); document.write( "d = 11 yrs is daughters age
\n" ); document.write( ":
\n" ); document.write( "How old is the movie star?
\n" ); document.write( "a = 7(11)
\n" ); document.write( "a = 77 yrs old is the star
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this in the 1st statement
\n" ); document.write( "\"5 years ago, I was 12 times as old as my daughter. \"
\n" ); document.write( "77 - 5 = 12(11-5)
\n" ); document.write( "72 = 12(6); confirms our answer \n" ); document.write( "
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