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.