document.write( "Question 509698: rea is 5 years older than jen-jen. in 4 years, rea will be twice as old as jen-jen. how old is each. \n" ); document.write( "

Algebra.Com's Answer #341565 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"r\"$ = Rea's age now
\n" ); document.write( "Let $\"j\"$ = Jen-Jen's age now
\n" ); document.write( "given:
\n" ); document.write( " $\"+r+=+j+%2B+5+\"$
\n" ); document.write( " $\"+r+%2B+4+=+2%2A%28j+%2B+4%29+\"$
\n" ); document.write( "By substitution:
\n" ); document.write( " $\"+j+%2B+5+%2B+4+=+2%2A%28j+%2B+4%29+\"$
\n" ); document.write( " $\"+j+%2B+9+=+2j+%2B+8+\"$
\n" ); document.write( " $\"+j+=+1+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+r+=+j+%2B+5+\"$
\n" ); document.write( " $\"+r+=+6+\"$
\n" ); document.write( "Jen-Jen is 1
\n" ); document.write( "Rea is 6 \n" ); document.write( "

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