CAT 2018 Slot 1 QA Q4 Time, Speed & Distance

Question 4 of the Quantitative Ability (QA) section, CAT 2018 Slot 1, with CAT's official answer.

The distance from A to B is 60 km. Partha and Narayan start from A at the same time and move towards B. Partha takes four hours more than Narayan to reach B. Moreover, Partha reaches the mid-point of A and B two hours before Narayan reaches B. The speed of Partha, in km per hour, is
  1. A
    6
  2. B
    3
  3. C
    4
  4. D
    5

Answer: (D) 5 Time, Speed & Distance MCQ

A worked solution for this question is being written. Meanwhile, practise it in a timed mock and see how other aspirants did.