document.write( "Question 1152652: in four years time khairul's mother will be three times as old as khairul.six years ago,his mother was seven times as old as him.find:khairul's present age,the age of his mother when he was born \n" ); document.write( "
Algebra.Com's Answer #774696 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! K is x \n" ); document.write( "In four years, he will be x+4 and his mother will therefore be 3(x+4) \n" ); document.write( "Six years ago, he was x-6 and his mother was 7(x-6). \n" ); document.write( "In 10 years his mother went from 7(x-6) to 3(x+4) \n" ); document.write( "so their difference is 10 \n" ); document.write( "7x-42+10=3(x+4), since 7x-42 is 10 years less than 3x+12 \n" ); document.write( "7x-32=3x+12 \n" ); document.write( "4x=44 \n" ); document.write( "x=11 age of K now \n" ); document.write( "in 4 years he will be 15 and his mother 45. \n" ); document.write( "Six years ago he was 5 and his mother 35 \n" ); document.write( "Therefore, his mother was 30 when he was born. \n" ); document.write( "She is now 41. \n" ); document.write( " |