// Exercise5_6.java: Finding sales amount to meet the commission
public class Exercise5_6
{
  // The commission sought
  final static double COMMISSION_SOUGHT = 25000;

  // Main method
  public static void main(String[] args)
  {
    double commission = 0;
    double salesAmount = 1;
      int low = 0;
      int high = (int)(COMMISSION_SOUGHT/0.08);

    while (low < high-1)
    {
      int mid = (low + high)/2;

      // Compute commission
      if (mid >= 10001)
        commission = 5000*0.08 + 5000*0.1 + (mid-10000)*0.12;
      else if (mid >= 5001)
        commission = 5000*0.08 + (mid -5000)*0.10;
      else
        commission = mid*0.08;

      if (commission == COMMISSION_SOUGHT)
      {
        break;
      }
      else if (commission < COMMISSION_SOUGHT)
      {
        low = mid;
      }
      else
      {
        high = mid;
      }
    }

    // Display the sales amount
    System.out.println("The sales amount " + high +
      " is needed to make a commission of $" + COMMISSION_SOUGHT);
  }
}