document.write( "Question 965239: A father says to his Son,\"I am 8 times as old as you are when I was as old as you are. If sum of their ages is 75, find their present age??? \n" ); document.write( "

Algebra.Com's Answer #590032 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A father says to his Son,\"I am 8 times as old as you are when I was as old as you are.
\n" ); document.write( "let d = (f-s), the difference in their ages
\n" ); document.write( "f-d = 8(s-d)
\n" ); document.write( "f - d = 8s - 8d
\n" ); document.write( "f = 8s - 8d + d
\n" ); document.write( "f = 8s - 7d
\n" ); document.write( "replace d with (f-s)
\n" ); document.write( "f = 8s - 7(f-s)
\n" ); document.write( "f = 8s - 7f + 7s
\n" ); document.write( "f + 7f = 15s
\n" ); document.write( "8f = 15s
\n" ); document.write( ":
\n" ); document.write( " If sum of their ages is 75,
\n" ); document.write( "f + s = 75
\n" ); document.write( "f = (75-s)
\n" ); document.write( "Replace f with 75 -s in the first equation
\n" ); document.write( "8(75-s) = 15s
\n" ); document.write( "600 - 8s = 15s
\n" ); document.write( "600 = 15s + 8s
\n" ); document.write( "600 = 23s
\n" ); document.write( "There's something wrong with this problem, solutions are not integers.
\n" ); document.write( " \n" ); document.write( "

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