document.write( "Question 300679: Judy is 12 years older than Joan. In 7 years, the sum of thier ages will be 42. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #215707 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Judy is 12 years older than Joan. In 7 years, the sum of thier ages will be 42. How old is each now?\r \n" ); document.write( "\n" ); document.write( "let joan's age be x\r \n" ); document.write( "\n" ); document.write( "judy's age will be x+12\r \n" ); document.write( "\n" ); document.write( "after 7 years their ages will be x+7 & (x+12) years\r \n" ); document.write( "\n" ); document.write( "x+7 + ( x+12 )+7 = 42\r \n" ); document.write( "\n" ); document.write( "x+7 + x+12 +7= 42\r \n" ); document.write( "\n" ); document.write( "2x+26=42\r \n" ); document.write( "\n" ); document.write( "2x=42-26\r \n" ); document.write( "\n" ); document.write( "2x=12\r \n" ); document.write( "\n" ); document.write( "x=6 which is joan\"s age\r \n" ); document.write( "\n" ); document.write( "Judy's age = 12+6 =18 years\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |