document.write( "Question 815395: Charlie was 40 years old when his son Adam was born.How old was Charlie when he was 5 times as old as Adam? \n" ); document.write( "
Algebra.Com's Answer #490931 by TimothyLamb(4379)\"\" \"About 
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c = 40
\n" ); document.write( "a = 0
\n" ); document.write( "c - a = 40
\n" ); document.write( "c = 40 + a
\n" ); document.write( "---
\n" ); document.write( "c = 5a
\n" ); document.write( "40 + a = 5a
\n" ); document.write( "40 = 4a
\n" ); document.write( "---
\n" ); document.write( "a = 10
\n" ); document.write( "c = 50
\n" ); document.write( "---
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