If a patient's blood pressure is 150/95, his pulse pressure is?

Systolic blood pressure is the maximal pressure that the heart exerts when beating. 

Diastolic blood pressure is the amount of pressure in the arteries during a heartbeat. 

Pulse is caused by the difference between systolic and diastolic blood pressure. 

For instance, if the systolic blood pressure is 150 mm Hg and the diastolic blood pressure is 95 millimeters of mercury (mm Hg), the pulse pressure would be 55 mm Hg.