Redner Inc. produces three products. Data concerning the selling prices and unit costs of the three products appear below:

Product

J K L

Selling price $$80$ $$60$ $$90$

Variable costs $504055$

Grinding machine time $10$ min $5$ min $7$ min

Demand for the three products exceeds the company$$s productive capacity. The grinding machine is the constraint, with only $2,400$ minutes of grinding machine time available this week.

Calculate the contribution margin per unit for each product. Show your work and label your answers.

Calculate the contribution margin per minute of grinding machine time for each product. Show your work and label your answers.

Given the grinding machine constraint, which product should be emphasized?