document.write( "Question 1015251: Loli is 20 years older than pop.In 10 years loliwill be twice as old as pop .how old is each now \n" ); document.write( "

Algebra.Com's Answer #631623 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+L+\"$ = Loli's age now
\n" ); document.write( "Let $\"+P+\"$ = Pop's age now
\n" ); document.write( "-----------------------
\n" ); document.write( "(1) $\"+L+=+P+%2B+20+\"$
\n" ); document.write( "(2) $\"+L+%2B+10+=+2%2A%28+P+%2B+10+%29+\"$
\n" ); document.write( "-------------------------
\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+P+%2B+20+%2B+10+=+2%2A%28+P+%2B+10+%29+\"$
\n" ); document.write( "(2) $\"+P+%2B+30+=+2P+%2B+20+\"$
\n" ); document.write( "(2) $\"+P+=+10+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+L+=+P+%2B+20+\"$
\n" ); document.write( "(1) $\"+L+=+10+%2B+20+\"$
\n" ); document.write( "(1) $\"+L+=+30+\"$
\n" ); document.write( "-------------
\n" ); document.write( "Loli is 30 now
\n" ); document.write( "Pop is 10 now
\n" ); document.write( "---------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+L+%2B+10+=+2%2A%28+P+%2B+10+%29+\"$
\n" ); document.write( "(2) $\"+30+%2B+10+=+2%2A%28+10+%2B+10+%29+\"$
\n" ); document.write( "(2) $\"+40+=+2%2A20+\"$
\n" ); document.write( "(2) $\"+40+=+40+\"$
\n" ); document.write( "OK \n" ); document.write( "

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