Answer:
The refining margin for crude X is $3.5 per barrel, and that of crude Y is $3.75 per barrel.
Since the Refining Margin for crude Y is higher, it is more profitable to refine at current prices. The reason behind this is that a higher refining margin means a higher selling price for that product.
We need to determine the refining margin for each of the products to determine which is more profitable to refine.
We use the following formula to determine refining margin
![Refining Margin (X) = 3.25 [68.25 (65+3.25) - 65]](https://img.qammunity.org/2019/formulas/business/college/wxb6bdjvnzs9ptlhuiqb6v3g396jgykyir.png)
![Refining Margin (Y) = 3.75 [63.75 (60+3.75) - 60]](https://img.qammunity.org/2019/formulas/business/college/8z1i5hor53it4asp9muxcrdtt1x62iz0mq.png)