If the blood pressure in your brain is 120 when you are lying down, what would it be when you stand up?

If the blood pressure in your brain is 120 when you are lying down, what would it be when you stand up? Assume that your brain is 40 from your heart and that = 1100 for your blood. Note: Normally, your blood vessels constrict and expand to keep your brain blood pressure stable when you change your posture.