document.write( "Question 1004552: The sum of the ages of two sisters Anna and Linda is 60years.if Anna is three times as old as Linda, calculate Linda's age \n" ); document.write( "
Algebra.Com's Answer #621022 by fractalier(6550)\"\" \"About 
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Call their ages A and L.
\n" ); document.write( "From the facts we have
\n" ); document.write( "A + L = 60 and
\n" ); document.write( "A = 3L
\n" ); document.write( "Substitute the second into the first and get
\n" ); document.write( "3L + L = 60
\n" ); document.write( "4L = 60
\n" ); document.write( "L = 15 and then
\n" ); document.write( "A = 45
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