double IParcelRules.OverweightChargeRule(ShippingRate shippingRate)
{
if (_weight > shippingRate.WeightLimitKg)
{
return((_weight - shippingRate.WeightLimitKg) * shippingRate.OverweightChargePerKg);
}
return(0);
}
private double CalculateOverweightCharge(ShippingRate shippingRate)
{
if (WeightKg > shippingRate.WeightLimitKg)
{
return((WeightKg - shippingRate.WeightLimitKg) * shippingRate.OverweightChargePerKg);
}
return(0);
}