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QUESTION 29 A company using cost-plus pricing has an ROI of 24%, total sales of 20,000 units and a desired ROI per unit of HK$30. What was the amount of investment? HK$144,000 O HK$2,500,000 O HK$456,000 HK$789,475 QUESTION 30 and the cost of the materials used was 150. If the company's rate charged per hour of labor was Lawrence Legal Services recently billed a customer 690. Labor hours were 75, what material loading percentage was used? O 30% 50% 60% O 100%