A 10-ml sample of pure orange juice was diluted with 40 mL of metaphosphoric acid solution. Then 10 mL of the diluted juice was titrated to an end point with 9.27 mL of DCIP. A blank required 0.25 mL of DCIP. A 1-mg sample of pure ascorbic acid required 6.52 mL(after blank correction) of DCIP. What is the concentration of ascorbic acid in the orange juice in mg/100 mL?