Operator '*' cannot be applied to operands of type 'double' and 'decimal'

Question

I get this message in my program but i don't know how to fix it i have search on the net but don't find any thing that can help me.

private double Price; private int Count; private double Vat;  private const double foodVATRate = 0.12, otherVATRate = 0.25; private decimal Finalprice; private decimal Rate;  public void Readinput() {     Finalprice = (decimal)(Price * Count); }  private void cal() {     char answer = char.Parse(Console.ReadLine());     if ((answer == 'y') || (answer == 'Y'))         Vat = foodVATRate;     else         Vat = otherVATRate;      Rate = Vat * Finalprice; 

Operator '*' cannot be applied to operands of type 'double' and 'decimal' is what comes up on Rate = Vat * Finalprice; and i don't know i can fix it

Answer 1

Try this:

Rate = (decimal)Vat * Finalprice; 

Answer 2

You need to cast one to the other. My guess is that both Price and all of your VAT rates should really be decimal - double isn't (usually) appropriate for dealing with any type of monetary values.