A ceramics company produces a set of ceramic cups consisting of one dozen cups. From the production department's data it is known the probability in one dozen ceramic cup there is more than one cup defect is 0.3; there is only one cup defect is 0.1; no defective cup is 0.6. If the sale of a dozen the company's flawless ceramic cup earns Rp 100,000 in profit; there is one cup disabled get a profit of Rp. 85,000, ; and more than one defective cup earns Rp 65,000, then: a. Determine the company's average profit for every one dozen ceramic cups! b. Determine the profit variance of the company