Final answer:
Oprah ran a total distance of 2.44 kilometers.
Step-by-step explanation:
To find the total distance Oprah ran, we need to add the distance she ran in the first part to the distance she ran in the second part.
In the first part, Oprah ran seven thirds of a kilometer. To add fractions, we need to find a common denominator. The common denominator of 3 and 9 is 9. So, seven thirds is equal to twenty-one ninths.
In the second part, Oprah ran one ninth of a kilometer.
To find the total distance, we add twenty-one ninths and one ninth, which equals twenty-two ninths.
Therefore, Oprah ran a total distance of twenty-two ninths of a kilometer, which is approximately 2.44 kilometers.