Ligo Dairy Farm sells milk for $$2\mathrm{.}50$ per gallon. Ligo Dairy wants to investigate if it would be financially wise to further process their milk to make butter, which they could sell for $$3\mathrm{.}75$ per pound. Ligo$$s batch sizes are $1,000$ gallons of milk, which will make $400$ pounds of butter. The total cost of producing the milk is $$750$ and the total cost of manufacturing the butter is $$900.$

Should Ligo sell milk or process it further to sell butter, and why?