Given: Speed of car from P to Q = 120 km/hr Speed of car from Q to P = 90 km/hr Calculation: Consider statement l: Distance traveled by car from P to C =120 × 2 =240 km/hr The statement alone does not help us in finding the distance traveled by car from Q. Consider statement ll: Distance between P and Q = 300kms The statement alone does not help us in finding the distance traveled by car from Q. Let us combine Statement I and Statement II: Distance traveled by P to C = 240 km/hr The total distance between P and Q = 300 km Distance travelled by second car from Q to C = 300kms – 240kms = 60km ∴ Both statements I and II are required to solve the question.