The ratio, (propeller agitator dia/tank dia) is normally taken as____________________? August 24, 2021March 2, 2019 by admin The ratio, (propeller agitator dia/tank dia) is normally taken as____________________? A. 0.15-030 B. 0.5-0.65 C. 0.75-0.85 D. 0.60-0.90