An airplane P is heading N 80o W at 250 m/s relative to the air. The wind blows from N 10o E with the speed of 40 m/s relative to the ground. Find the magnitude and direction of the velocity of airplane P relative to the ground. In the meantime, the velocity of airplane Q relative to the air is 250 m/s in the direction of N 20o W. What is the speed of airplane Q relative to airplane P?