Need help with logic error in c++ code. My for loop only finds the average of the last user input instead of the TOTAL inputs of the program.

problem below:

Five students at a local middle school volunteered to sell fresh baked cookies to raise funds to increase the number of computers for the computer lab. Each student reported the number of boxes he/she sold. Cost of each box of cookies was $4.50. Write a program that will output the total number of boxes of cookies sold, the total revenue generated by selling the cookies, and the average number of boxes sold by the students. Prompt the user to enter the following information: the StudentID number and the number of boxes sold.

SAMPLE RUN (text in blue is user entered)

Enter ID for student 1 : 101

Enter number of boxes sold by 101 : 6

Enter ID for student 2 : 102

Enter number of boxes sold by 102 : 5

Enter ID for student 3 : 103

Enter number of boxes sold by 103 : 9

Enter ID for student 4 : 104

Enter number of boxes sold by 104 : 10

Enter ID for student 5 : 105

Enter number of boxes sold by 105 : 7

Total Revenue = $166.5

Average Boxes Sold by 5 students = 7.4

my code:

code below:

#include

using namespace std;

//start of main function

int main()

{

//declare inputs and outputs

int StudentID;

double BoxesSold;

double TTLRevenue; //total revenue for cookie sales

double AVGbox; // Average of cookie sales

double cost = 4.50; //the cost of 1 box of cookies

int total = 5; //total number of students selling cookie boxes

for (int counter=1; counter <= 5; counter++) //number of student entries = 5

{

//instruct user to input ID number for students 1-5

cout << "Enter ID number for student " << counter <

cin >> StudentID;

//instruct user to enter # of boxes sold by user's specific ID number

cout << "Enter number of boxes sold by " << StudentID << endl;

cin >> BoxesSold;

}

//calculate the value for total revenue

TTLRevenue = BoxesSold * cost;

//calculate Average # of boxes sold by all students

AVGbox = BoxesSold / total;

//output total revenue for user

cout << "Total Revenue = " << TTLRevenue << endl;

//output Average boxes sold by students

cout << "Average boxes sold by " << total << " students" << AVGbox << endl;

}