Sarah makes a breakfast mix with 80 grams of oatmeal, 20 grams of berries, and 150 grams of milk. There are 389 calories in 100 grams of oatmeal, 57 calories in 100 grams of berries, and 42 calories in 100 grams of milk. How many calories are in 50 grams of her breakfast mix?
68.9
72.5
77.1
81.7
85.3