modify a program & programming project

Type or open the source code named AverageScore.java on p.113.  Alter the program so that a message is displayed for a low score in addition to the existing message for a high score.

If the average is less than 60, display "You might need a tutor."

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Chapter 3 Programming Project:  Ticket Sales

The Barton Box Office sells tickets to college events. Discounts are provided to groups based on the following scale:

Number of tickets                Discount
1-5                                       None
6-10                                     15%
11-15                                   20%
16-20                                   25%
21+                                      30%

Tickets cost $15 a piece (prior to any discount).  Write a program that asks for the number of ticket to purchase. Then calculate and display the amount of the discount (if any) and the total purchase price.