Multiple choice general knowledge math & puzzles

Sherlock Holmes finds another clue on reaching the spot. It leads him to a potential witness. The witness informs him that “I reached the spot at 2 A.M. Since it was dark I was carrying a lantern. The lantern has 50 ml of oil when I lit it up at 1 A.M at the station. The lantern burns 1 ml of oil every 2 minute. At 2:45 I saw a person walking down the lane toward main gate. I asked him to stop. He started running and I followed. I finally nabbed him at 2:55 and in lantern light I saw his face. He punched me and ran away” Sherlock accuses him of lying. Why??

  1. sherlock was on drugs so his mind was not working

  2. Sherlock calculated the the lantern cant burn till then

  3. he thinks that witness might have been the culprit

  4. There was sign of bruise on his face at temple but not on his cheeks.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The lantern had 50 ml of oil at 1 AM and burns 1 ml every 2 minutes. From 1 AM to 2:55 AM is 115 minutes (1 hour 55 minutes), which would require 57.5 ml of oil. Since only 50 ml was available, the lantern would have run out around 2:40 AM, making it impossible for the witness to see anyone's face at 2:55 AM.

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