First Benchmark Publishing’s gross margin is 50% of sales. The operating costs of the publishing are estimated at 15% of sales. If the company is within the 40% tax bracket, determine the percent of sales is their profit after taxes ?

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First Benchmark Publishing’s gross margin is 50% of sales. The operating costs of the publishing are estimated at 15% of sales. If the company is within the 40% tax bracket, determine the percent of sales is their profit after taxes ?

A. 21 %
B. 20 %
C. 19 %
D. 18 %