Starting out with Java: From control structures through objects
Chapter 3
Programming Challenges
14. Internet Service provider, Part 2
Modify the program you wrote for Programming Challenge 13 so it also calculates and displays the amount of money Package A customers would save if they purchased Package B or C, and the amount of money Package B customers would save if they purchased Package C. If there would be no savings, no message should be printed.
Gaddis, Tony (2015-05-29). Starting Out with Java: From Control Structures through Objects (Page 188). Pearson Education.
Kindle Edition.
Happy Steeming Everyone!
Check out the article I just wrote on how to hack google play and please give a follow i think you will find it interesting