// method for calculate the total sales tax
public double TotalSalesTax()
{
// calculate the total sales tax amount
for (int i = 0; i < item.Length; i++)
{
tax = new Tax();
tax.CalculateTax(item[i]);
totaltax = totaltax + tax.TotalTaxAmount();
}
//return the rounded up to the nearest 0.05) amount of sales tax
return Math.Ceiling(totaltax * 20) / 20;
}
// method for calculate the total sales tax
public double TotalSalesTax()
{
// calculate the total sales tax amount
for (int i = 0; i < item.Length; i++)
{
tax = new Tax();
tax.CalculateTax(item[i]);
totaltax = totaltax + tax.TotalTaxAmount();
}
//return the rounded up to the nearest 0.05) amount of sales tax
return(Math.Ceiling(totaltax * 20) / 20);
}
