Roscoe Construction Company $($RCC$)$ is a company specializing in building roads and highways. As a part of its business, it receives

supplies of aggregate from two suppliers: Toorak Gravel $($TG$)$ and Kilda Corporation $($KC$).$ RCC purchasing has expressed a preference

for $KC$ based on price, but occasionally has to order from TG when KC cannot fill the order.

RCC has recently had problems with the quality and the timeliness of deliveries. When a supplier delivers a load to RCC$,$ it goes

through an initial inspection to assure it meets specification. If the load fails the initial inspection, it goes through a secondary

inspection to determine the exact issue. Almost always, the issue can be resolved and the load can be used. The initial inspection

costs $$2,496$ per load. A secondary inspection, which is more thorough, costs $$6,275$ per load. If a delivery is delayed, RCC has to hire

temporary workers or pay overtime to some employees. The average cost of a delayed load is $$3,275.$

The following are summary statistics from last year's purchases from the two suppliers.

Required:

Calculate the effective cost of a ton of aggregate from the two suppliers, assuming that last year's experience is representative.

$($Round "Average price paid per ton" & "Average effective price per ton" answers to $2$ decimal places.$)$

Answer is complete but not entirely correct.