document.write( "Question 567094: Jon says: When I add 7 times my age 7 years from now to 11 times my age 11 years from now, I get 20 times my current age. How old will I be 5 years from now? \n" ); document.write( "

Algebra.Com's Answer #366432 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = Jon's age now
\n" ); document.write( " $\"+x+%2B+7+\"$ = Jon's age 7 yrs from now
\n" ); document.write( " $\"+x+%2B+11+\"$ = Jon's age 11 yrs from now
\n" ); document.write( " $\"+x+%2B+5+\"$ = Jon's age 5 yrs from now
\n" ); document.write( "given:
\n" ); document.write( " $\"+7%2A%28+x+%2B+7+%29+%2B+11%2A%28+x+%2B+11+%29+=+20x+\"$
\n" ); document.write( " $\"+7x+%2B+49+%2B+11x+%2B+121+=+20x+\"$
\n" ); document.write( " $\"+18x+%2B+170+=+20x+\"$
\n" ); document.write( " $\"+2x+=+170+\"$
\n" ); document.write( " $\"+x+=+85+\"$
\n" ); document.write( " $\"+x+%2B+5+=+90+\"$
\n" ); document.write( "In 5 yrs I will be 90
\n" ); document.write( "check:
\n" ); document.write( " $\"+7%2A%28+85+%2B+7+%29+%2B+11%2A%28+85+%2B+11+%29+=+20%2A85+\"$
\n" ); document.write( " $\"+7%2A85+%2B+49+%2B+11%2A85+%2B+121+=+20%2A85+\"$
\n" ); document.write( " $\"+20%2A85+-+18%2A85+=+121+%2B+49+\"$
\n" ); document.write( " $\"+2%2A85+=+170+\"$
\n" ); document.write( " $\"+170+=+170+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );