document.write( "Question 830988: Lucas is two and a half times as old as Jenny. If Lucas is 15 years older, then how old is Jenny? I got the equation: 2.5x=x+15 but now I'm stuck. \n" ); document.write( "
Algebra.Com's Answer #501052 by Alan3354(69443)\"\" \"About 
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Lucas is two and a half times as old as Jenny. If Lucas is 15 years older, then how old is Jenny? I got the equation: 2.5x=x+15 but now I'm stuck.
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\n" ); document.write( "L = 2.5J
\n" ); document.write( "L = J + 15
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\n" ); document.write( "Sub for L in the 2nd eqn
\n" ); document.write( "2.5J = J + 15
\n" ); document.write( "1.5J = 15
\n" ); document.write( "J = 10
\n" ); document.write( "----
\n" ); document.write( "L = 25
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