Blood circulation

The amount of blood pumped by the heart per minute is called the cardiac output. The heart of a normal person beats 72 times per minute. This is called the heart rate. During each and every heartbeat, the ventricles pump about 70 ml of blood. This is known as stroke volume. This means heart pumps 72 x 70 ml = 5040 ml or approximately 5 liters of blood per minute.

Sir it is only per ventricle they mentioned the cardiac output

Approx 5lt / Min