document.write( "Question 720605: Kabir age is 20 years hence will be 3 time his age 12 years ago. Find Kabir present age. \n" ); document.write( "

Algebra.Com's Answer #441905 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = his age now
\n" ); document.write( " $\"+x+%2B+20+\"$ = his age 20 years hence
\n" ); document.write( " $\"+x+-+12+\"$ = his age 12 years ago
\n" ); document.write( "given:
\n" ); document.write( " $\"+x+%2B+20+=+3%2A%28+x+-+12+%29+\"$
\n" ); document.write( " $\"+x+%2B+20+=+3x+-+36+\"$
\n" ); document.write( " $\"+2x+=+56+\"$
\n" ); document.write( " $\"+x+=+28+\"$
\n" ); document.write( "He is 28 now
\n" ); document.write( "-----------
\n" ); document.write( "check:
\n" ); document.write( "In 20 years he is 48
\n" ); document.write( "12 years ago he was 16
\n" ); document.write( " $\"+48+=+3%2A16+\"$
\n" ); document.write( " $\"+48+=+48+\"$
\n" ); document.write( "OK \n" ); document.write( "

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