Answer:
Proposal B should be accepted
Explanation:
1 2 3 4
Sales(Units) 20,000 30,000 40,000 50,000
Variable Cost (A) 160,000 240,000 320,000 400,000- 15,000
Variable Cost (B) 52,000 78,000 104,000 130,000 - 32,000
PV Factor(9%) 0.917 0.841 0.772 0.708
PV OF Variable Cost(A) 146,720 201,840 247,040 272,580
PV of Variable Cost(B) 47,684 65,598 80,288 69,384
Total PV of Variable Cost of A: $868,180
Total PV of Variable Cost of B: $262,954
Difference in PV of Expenses= $605,226
Difference in PV of Outflow = 280,000 - 120,000 = $160,000
So, Proposal B should be accepted because it has a cost saving of Net $445,226 (605,226 - 160,000).