Multiple choice

Shatabdi express leaves Patna at 8:00 am for Delhi. At what time will it reach Delhi? I : For the first 100 km it travels at the speed of 250 km per hour and maintains the same speed during the entire journey. II : It has 5 stoppages in between Delhi and Patna. III : Before every stoppages, it covers a same distance of 240 km.

  1. III and (I or II ) are sufficient

  2. Only III is sufficient.

  3. Only I and II together are sufficient.

  4. Only statement I, II, and III together are sufficient.

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

None of the statements are sufficient to determine the arrival time. Statement I gives speed (250 km/hr) but we don't know total distance. Statement II gives number of stoppages (5) but not duration of each stop. Statement III says 240 km between stoppages, but with 5 stoppages, this only accounts for 5 × 240 = 1200 km, and we don't know: (a) if this covers the full Patna-Delhi distance, (b) the remaining distance after the last stoppage, or (c) stoppage durations. Even combining all three, we cannot determine the total distance or stoppage times to calculate arrival time.

Keep practicing — related questions