A flight crew estimates to burn 40 gallons of fuel for run up, taxi and take off. Then they expect to cruise at 250 knots consuming 320 gallons per hour. However, after take off the crew realizes that the nose gear does not retract which decreases cruise speed by 50 knots and increases fuel consumption by 25%. On ground they have loaded 800 gallons of fuel. How long (in minutes) could they cruise until all the fuel is consumed?