Cost-Volume-Profit of a Make/buy Decision

Essay

Cost-volume-profit of a Make/buy Decision
Elly Industries is a multiproduct company that currently manufactures 30,000 units of Part MR24 each month for use in production. The facilities now being used to produce Part MR24 have affixed monthly cost of $150,000 and a capacity to produce 84,000 units per month. If Elly were to buy Part MR24 from an outside supplier, the facilities would be idle, but its fixed costs would continue at 40 percent of its present amount. The variable production costs of Part MR24 are $11 per unit.
Required:
a. If Elly Industries continues to use 30,000 units of Part MR24 each month, it would realize a net benefit by purchasing Part MR24 from an outside supplier only if the supplier's unit price is less than how much?
b. If Elly Industries can obtain Part MR24 from an outside supplier at a unit purchase price of $12.875, what is the monthly usage at which it will be indifferent between purchasing and making Part MR24?
Source: CMA adapted