It's a beautiful day for flying your Cessna. Your instruments indicate that you are moving at a bearing of 310 degrees and a speed of 100 knots, both with respect to the surrounding air. Ground control tells you that there is a south wind blowing at a speed of 20 knots. You figure out that your are moving at a bearing of degrees and a speed of knots relative to the ground.
Hint: The south wind blows from south due north. Draw a picture. Think of the south wind broken into two components, one with a bearing of 310 degrees, and one perpendicular to that bearing.