ignore the last reply, but look at this posting
http://www.jiskha.com/display.cgi?id=1256748805
If you were buying nuts, would you rather pay $9/kg or $4/500g?
3 answers
So it would be $4/500g because $4/1/2kg * 2/2= $8/1kg.
$8<$9
$8<$9
correct again.