In the morning (3/4) (strawberries / minutes) * (60/1) (minutes / hours) = 45 (strawberries / hours) in the afternoon (2/3) (strawberries / minutes) * (60/1) (minutes / hours) = (40 strawberries / hours) the difference between your morning and afternoon packing rates, in pints per hour is 45-40 = 5 (strawberries / hours)