When making a major purchase, i often spend months to learn all the issues?

Carmen co. can further process product j to produce product d. product j is currently selling for $20 per pound and costs $15.75 per pound to produce. product d would sell for $38 per pound and would require an additional cost of $8.55 per pound to produce. what is the differential revenue of producing product d?

What should a food worker use to retrieve ice from an ice machine?

Companies under market structures are independent