CAT Practice : Speed Time, Races

Starting Time

    Q.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


  • Correct Answer
    Choice C. 00:02 hrs

Detailed Solution

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

Correct Answer: 00:02 hrs

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"Life is a race ... if you don't run fast ... you will be like a broken undaa" - Veerusahasra Buddhi