document.write( "Question 892461: Jan is 7 years younger than Lucy and 4 years older than Sam The average of their ages is 16. How old is Jan? Sam? Lucy? \n" ); document.write( "
Algebra.Com's Answer #540535 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Jan is 7 years younger than Lucy and 4 years older than Sam The average of their ages is 16. How old is Jan? Sam? Lucy? \n" ); document.write( "*** \n" ); document.write( "let x=Jan's age \n" ); document.write( "x+7=Lucy's age \n" ); document.write( "x-4=Sam's age \n" ); document.write( "..\r \n" ); document.write( "\n" ); document.write( "x+(x+7)+(x-4)/3=16 \n" ); document.write( "3x+3=48 \n" ); document.write( "3x=45 \n" ); document.write( "x=15 \n" ); document.write( "x+7=22 \n" ); document.write( "x-4=11 \n" ); document.write( "Jan's age=15 \n" ); document.write( "Lucy's age=22 \n" ); document.write( "Sam's age=11 \n" ); document.write( " |