<image>The following is a grade distribution chart for two classes:
(1) If scores above 85 are considered excellent, calculate the excellent rate for each class:
Class 1 Excellent Rate:____
Class 2 Excellent Rate:____
Which class has a higher excellent rate?
(2) State the degree measure of the central angle of the sector with the largest number of students in Class 1.
(3) What are the passing rates for these two classes?