CAT Quantitative Aptitude Questions | CAT Time Speed and Distance & Races

CAT Questions | Time and distance | Starting Time

The question is from the topic time and distance. It tests our standing of hours and minutes. Time Speed and Distance is a favorite in CAT Exam, and appears more often than expected in the CAT Quantitative Aptitude section in the CAT Exam

Question 19: Kumar started from Chennai at x hrs y minutes and travelled to Vellore. He reached Vellore at y hrs z minutes. If the total travel time was z hrs and x minutes, his starting time in Chennai could have been ______ (Assume clock format to be 0 to 24 hrs).

  1. 02:08 hrs
  2. 13:03 hrs
  3. 00:02 hrs
  4. 12:01 hrs

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Explanatory Answer

Method of solving this CAT Question from Time Speed Distance: Relate x,y,z and you are through!

x, y or z cannot be greater than 24
Also x + y + z cannot be greater than 24
Given x hrs + z hrs = y hrs
Also y min + x min = z min
The only value of x that will satisfy the above 2 equations is 0.
Hence, from among the choices given, the time could be 00:02 hrs

The question is "If the total travel time was z hrs and x minutes, his starting time in Chennai could have been ______"

Hence, the answer is 00:02 hrs

Choice C is the correct answer.


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