Umm...60 grams.
1.5 grams is equal to 1 tablespoon of hummus.
Since 16 tablespoons are in a cup, you'd have to multiply the 1.5 grams per tablespoon by 16 to find the amount of fat in grams are in a cup.
You'll get 24 grams as an answer.
Since you're trying to find the amount of grams in 2.5 (2 1/2) cups of hummus, you just multiply 24 by 2.5 to get the overall answer of 60 grams.