In a flight of 600kms ab aircraft was slowed down due to bad weather. Its avg speed for the trips is reduced by 200km/hr and the time of flight increased by 30min. The duration of the flight is (in hrs)
Out of the total girls who appeared for the exam from cities P, Q and R, what percent cleared the exam? (A) 41.35% (B) 47.35% (C) 51.88% (D) 56.38% (E) 59.78%