Answer:
57 deaths per hour
Explanation:
In one year, we have 365 days.
Now, there are 24 hours in a day.
Thus,
Number of hours in one year = 365 × 24 = 8760 hours
Now, since there are half a million heart attacks deaths occurring in the United States of America each year, it means that;
There are 500000 deaths every 8760 hours.
Therefore, death rate per hour = 500000/8760 ≈ 57 deaths per hour