To add the two fractions, you need a common denominator which is 15. The first fraction is equal to 10/3 and the second fraction is equal to 17/5. Since the denominators are already the same, you can add the numerators together: 10 + 17 = 27. The denominator remains the same: 3. So, Jett scores a total of 27/3 = <<27/3=9>>9 points for both rounds. Answer: \boxed{9}.
