a. Calculate the additional shipping and transit inventory cost using the air and ground transportations. (Negative answers should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.) b. Considering all shipments combined, is the decision to switch to air shipping cost effective? Yes No The table below provides shipping rates for packages using UPS next day air or ground service options. The rates vary according to poth the weight of the package and the distance of the shipment (larger numbered zones are farther away). Note that the zone number also indicates the number of days required to deliver a package using ground service. A transportation manager must ship orders of materials weighing ten pounds each to destinations in each of the seven zones listed in the table. The daily inventory holding ate is $9.50 per day for all orders. The manager has decided to use next day air service for all shipments