document.write( "Question 1150851: Charles is four times as old as his daughter Nina.Eight years ago he was ten times as old as Nina. How old is Charles today? \n" ); document.write( "

Algebra.Com's Answer #772375 by MathLover1(20850) $\"\"$ $\"About$

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Charles is four times as old as his daughter Nina.
\n" ); document.write( " $\"Charles=4Nina\"$ ......eq.1\r
\n" ); document.write( "\n" ); document.write( "Eight years ago he was ten times as old as Nina.\r
\n" ); document.write( "\n" ); document.write( " $\"Charles-8=10%28Nina-8%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"Charles-8=10Nina-80\"$
\n" ); document.write( " $\"Charles=10Nina-80%2B8\"$
\n" ); document.write( " $\"Charles=10Nina-72\"$ .......eq.2\r
\n" ); document.write( "\n" ); document.write( "from eq.1 and eq.2\r
\n" ); document.write( "\n" ); document.write( " $\"4Nina=10Nina-72\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"72=10Nina-4Nina\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"72=6Nina\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"Nina=72%2F6\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"Nina=12\"$ ..........Nina is $\"12\"$ years old today\r
\n" ); document.write( "\n" ); document.write( "then
\n" ); document.write( " $\"Charles=4Nina\"$ ......eq.1
\n" ); document.write( " $\"Charles=4%2A12\"$
\n" ); document.write( " $\"Charles=48\"$ ......Charles is $\"48\"$ years old today\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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