Option (D) is correct answer.
Number of females in Civil department = 220*.35 = 77
Number of females in Electrical department= 360*.65= 234
Total females in both department = 77+ 234= 311
Number of males in Civil department = 220*.65= 143
Number of males in Electrical department = 360*.35=126
Total number of males in both department = 143+126 = 269
Ratio = 311 :269