When should Mr. Jones's blood pressure be taken if his medication was given at 9:30 am and it needs to be checked 1.5 hours later?

To determine when Mr. Jones's blood pressure should be taken after his medication, you begin by looking at the time the medication was administered. Since Mr. Jones received his medication at 9:30 am and the blood pressure needs to be checked 1.5 hours later, you add 1.5 hours to that time.

Starting with 9:30 am, adding 1 hour brings you to 10:30 am, and then adding an additional 30 minutes takes you to 11:00 am. This calculation indicates that the appropriate time to check Mr. Jones's blood pressure is indeed 11:00 am, which aligns with the requirement to check it 1.5 hours after the administration of the medication.

This careful timing is critical because blood pressure can significantly change in response to medications, and monitoring it at the correct interval ensures proper management of Mr. Jones's condition.