1 hour 7 minutes - 40 minutes = 27 minutes3 hours - 20 minutes = 2 hours 40 minutes1 kilogram - 256 grams = 744 grams
1 hour 7 minutes - 40 minutes = 27 minutes
3 hours - 20 minutes = 2 hours 40 minutes
1 kilogram - 256 grams = 744 grams