A 6-MV linear accelerator is calibrated to give 1 cGy/MU in a phantom at a reference depth of maximum dose of 1.5 cm, 100-cm SSD, and 10x10 cm field size. Determine the MU values to deliver 200 cGy to a patient at 100 cm SSD, 10 cm depth, and using a 20x20 open field size and a 18x18 blocked, given Sc(20x20)=1.025, Sp (20x20)=1.01, %DD=68.2% and normalization of 95%. If the patient was accidentally set up SAD in the previous question, what is the new MUs?