Anybody want to help me, please...

Question

First of all, I'm not sure about the constant values. I wasn't sure so I just guessed. Are they totally wrong, or does it not matter?
The part that I'm confused about is the end where it says "endingTotalTime", in the assignment it says we're supposed to use / and % with 60 minutes per hour. I'm not really sure how to use the % in the program.
public static void main(String[] args) {
     //Declare constant values
     int TimeInHours = 1;
     int TimeInMinutes = 60;
     //Declare variables used to store user input
     String userInput;
     int startInHours;
     int startInMinutes;
     int durationInHours;
     int durationInMinutes;
     //Get the start time in hours from the user
     System.out.print("Enter the starting time in hours: ");
     userInput = SimpleIO.readLine();
     TimeInHours = Integer.parseInt(userInput);
     //Get the start time in minutes from the user
     System.out.print("Enter the starting time in minutes: ");
     userInput = SimpleIO.readLine();
     TimeInMinutes = Integer.parseInt(userInput);
     //Get the duration time in total hours from the user
     System.out.print("Enter the duration time in hours: ");
     userInput = SimpleIO.readLine();
     durationInHours = Integer.parseInt(userInput);
     //Get the duration time in total minutes from the user
     System.out.print("Enter the duration time in minutes: ");
     userInput = SimpleIO.readLine();
     durationInMinutes = Integer.parseInt(userInput);
     //Declare variables used for calculations
     int endingTotalTime;
     int endingHours;
     int endingMinutes;
     //Calculate the total time
     endingTotalTime =

Answer 1

public static void main(String[] args) {
//Declare constant values
int TimeInHours = 1;
int TimeInMinutes = 60;
//Declare variables used to store user input
String userInput;
int startInHours;
int startInMinutes;
int durationInMinutes;
//Get the start time in hours from the user
System.out.print("Enter the starting time in hours: ");
userInput = SimpleIO.readLine();
TimeInHours = Integer.parseInt(userInput);
//Get the start time in minutes from the user
System.out.print("Enter the starting time in minutes: ");
userInput = SimpleIO.readLine();
TimeInMinutes = Integer.parseInt(userInput);
//Get the duration time in total minutes from the user
System.out.print("Enter the duration time in minutes: ");
userInput = SimpleIO.readLine();
durationInMinutes = Integer.parseInt(userInput);
//Declare variables used for calculations
int endingTotalTime;
int endingHours;
int endingMinutes;
//Calculate the total time
endingTotalTime = (startInHours * 60) + startInMinutes + durationInMinutes;
endingHours = endingTotalTime / 60;
Ok, that's everything I have so far. Now I'm supposed to calculate endingHours and endingMinutes, but didn't I technically already solve for endingHours up there. ^^
On the line that says endingHours = endingTotalTime / 60???