A car finishes a journey in nine hours at the speed of 80 km/hr. If the same distance is to be covered in six hours how much more speed does the car have to gain?\nOptions:\n(A) 8 km/hr\n(B) 40 km/hr\n(C) 12 km/hr\n(D) 16 km/hr\n(E) None of these Now, let's think a bit. Some random thoughts:
User
Distance covered by the car = 80 × 9 = 720 km\n\ Speed = 720⁄6 = 120 km/hr\n\ Speed gain = 120 – 80 = 40 km/hr
The final answer: (B).
Assistant