400
Mars and Angela are at a restaurant. They arrive at 12:00. It takes three minutes for the waiter to arrive, five minutes to take the order, two minutes for their drinks to arrive, another 5 for their meals to arrive, 30 minutes to eat, 5 minutes to choose and order desert, 7 minutes to wait for the desert, 15 minutes to eat it, and 4 minutes to pay the bill. This is how long they were at the restaurant.
What is 1 hour and 21 minutes.