Ada and Paul received their scores on three tests. On
the first test, Ada's score was 10 points higher than
Paul's score. On the second test, Ada's score was
4 points higher than Paul's score. If Paul's average
(arithmetic mean) score on the three tests was
3 points higher than Ada's average score on the three
tests, then Paul's score on the third test was how many
points higher than Ada's score?