document.write( "Question 19348: a half of what John's age was 4 years ago is equal to one third of what it will be in 5 years time.How old is John \n" ); document.write( "
Algebra.Com's Answer #9362 by xcentaur(357)![]() ![]() ![]() You can put this solution on YOUR website! let his age be x \n" ); document.write( "then we get, \n" ); document.write( " \n" ); document.write( "1/2(x-4)=1/3(x+5) \n" ); document.write( " \n" ); document.write( "cross multiply, \n" ); document.write( "3(x-4)=2(x+5) \n" ); document.write( " \n" ); document.write( "3x-12=2x+10 \n" ); document.write( "3x-2x=12+10 \n" ); document.write( "x=22 \n" ); document.write( " \n" ); document.write( "So his age right now is 22 years \n" ); document.write( "
|