public double minus(Gram gram, double amount)
 {
     gram.Amount = gram.Amount - amount;
     return(gram.Amount);
 }
 public double ConvertToOunces(Gram G)
 {
     return(G.Amount * 0.0352739619);
 }
 //Create a superClass for the following methods
 public double plus(Gram gram, double amount)
 {
     gram.Amount = gram.Amount + amount;
     return(gram.Amount);
 }