How are air cargo rates calculated? Calculate the cost of international air transportation for the following shipment: $200$ cartons of fine jewelry weighing a total of $2,500$ pounds. The carton dimensions are $18$ inches by $12$ inches by $12$ inches $($L $\backslash$times W $\backslash$times H$).$ The freight rate is $$10\mathrm{.}25$ per pound.