Java code Created to answer this question:
import java.util.Scanner;
public class Ipods {
public static void main(String[] args){
// 10classes
int arr[] = newint[10];
Scanner sc = newScanner(System.in);
int i = 0,n;
//reading thequantity for each class
while (i < 10){
System.out.println(“Enter the number of Ipads required for class “+ (i + 1));
n = sc.nextInt();
// checking if the quantity is less than 20
if (n < 20) {
//storing in array
arr[i++] = n;
} else {
System.out.println(“Quantity must be less than 20”);
}
}
i = 0;
double total = 0,cTotal = 0;
while (i < 10){
//calculating the total bill
cTotal = arr[i] * 799;
//adding 8.2% tax
cTotal = 1.082