(run* [mf ff ss hw ms sp] (fd/in mf ff ss hw ms sp (fd/interval 0 10)) (fd/eq (= (+ (* mf 215) (* ff 275) (* ss 335) (* hw 355) (* ms 420) (* sp 580)) 1505)))
I think the original post has one of the prices wrong.
BTW thanks for working on this stuff swannodette - I hope to look into core.logic in the not too distant future...
EDIT: Yes, his price for salad is 3.25 instead of 3.35