document.write( "Question 1175106: In 5 years, Jolo would be twice the age of Julianne. Five years ago, Jolo was 4 times as
\n" ); document.write( "old as Julianne. How old is Jolo now? How old is Julianne now? \n" ); document.write( "

Algebra.Com's Answer #800653 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "let Jolo's age be $\"x\"$ and Julianne's age $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( "if in $\"5+\"$ years, Jolo would be $\"twice\"$ the age of Julianne, we have\r
\n" ); document.write( "\n" ); document.write( " $\"x%2B5=2%28y%2B5%29\"$ ....solve for $\"x\"$
\n" ); document.write( " $\"x=2y%2B10-5\"$
\n" ); document.write( " $\"x=2y%2B5\"$ ......eq.1\r
\n" ); document.write( "\n" ); document.write( "if $\"5\"$ years ago, Jolo was $\"4\"$ times as old as Julianne, we have
\n" ); document.write( " $\"x-5=4%28y-5%29\"$ ....solve for $\"x\"$
\n" ); document.write( " $\"x=4%28y-5%29%2B5\"$
\n" ); document.write( " $\"x=4y-20%2B5\"$
\n" ); document.write( " $\"x=4y-15\"$ .....eq.2\r
\n" ); document.write( "\n" ); document.write( "from eq.1 and eq.2 we have:\r
\n" ); document.write( "\n" ); document.write( " $\"4y-15=2y%2B5\"$ ...solve for $\"y\"$
\n" ); document.write( " $\"4y-2y=15%2B5\"$
\n" ); document.write( " $\"2y=20\"$
\n" ); document.write( " $\"y=10\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( " $\"x=2y%2B5\"$ ......eq.1, substitute $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=2%2A10%2B5\"$
\n" ); document.write( " $\"x=20%2B5\"$
\n" ); document.write( " $\"x=25\"$ \r
\n" ); document.write( "\n" ); document.write( "so, Jolo is $\"25\"$ years old now, and Julianne is $\"10\"$ years old now\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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