In most people, a systolic bp of is sufficient to perfuse the brain and other vital organs.

80 – 90 mm Hg.

Explanation:

Blood pressure may be defined as the pressure exerted on the walls of hearts during the blood flow. The maintenance of the blood pressure is important for the proper functioning of the body.

Systolic blood pressure is pressure exerts during the heart contraction. This is the arterial pressure during the contraction of the especially left ventricles of the heart. The sufficient systolic blood pressure of the body that are sufficient for the body is 80 – 90 mm Hg.

Thus, the answer is 80 – 90 mm Hg.

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is correct hope this   also i learnd this in middle school