Answer:
7.20
Step-by-step explanation:
The computation of willing to pay amount is shown below:
= (Selling price per unit - variable cost per unit) ÷ (Minutes on the constraint)
For Product WX
= ($335.18 - $259.26) ÷ (7.50)
= 10.12
For Product KD
= ($228.46 - $173.08) ÷ (4.30)
= 12.88
For Product FS
= ($199.21 - $159.61) ÷ (5.50)
= 7.20
So based on rank, the product FS should be used as it has third rank i.e 7.20