what is the answer

Acme Builders is considering merging with Joe's Construction to achieve economies of scope sufficient to drive the combined firms' costs down by at least $500,000. Acme Builders has costs of $5,000,000 and sales of $8,000,000, and Joe's Construction has costs of $3,000,000 and sales of $5,000,000. What would be the minimum combined average cost of sales expressed as a percentage necessary to achieve the cost reduction goal? O 1) 59 percent O 2) 59.43 percent O 3) 55.82 percent O 4) 57.69 percent