Final answer:
The contribution to income from selling the HS at split-off is $154,000. The contribution to income from processing the HS into CS is $119,200. Boro should continue to sell the HS at split-off if the contribution to income from selling is higher.
Step-by-step explanation:
The contribution to income from selling the 14,000 pounds of HS at split-off can be calculated by multiplying the quantity of HS sold (14,000 pounds) by the selling price per pound ($11). This would result in a contribution to income of $154,000.
The contribution to income from processing the 14,000 pounds of HS into 4,000 pounds of CS can be calculated by subtracting the additional processing costs ($40,800) from the revenue generated by selling the CS ($63 per pound multiplied by 4,000 pounds). This would result in a contribution to income of $119,200.
To decide whether Boro should continue to sell HS at split-off or process it further into CS, they should compare the contribution to income from each scenario. If the contribution to income from selling HS at split-off is higher than the contribution to income from processing it further into CS, Boro should continue to sell HS at split-off. If the contribution to income from processing HS into CS is higher, Boro should process it further.