A moth species lays eggs that hatch into larvae in $4$ days. The larval stage lasts for $12$ days, followed…

A moth species lays eggs that hatch into larvae in $4$ days. The larval stage lasts for $12$ days, followed by a pupal stage lasting $8$ days. If an egg is laid on 1st March, on which date will the adult moth emerge?
  1. 15th March
  2. 21st March
  3. 25th March
  4. 30th March

Solution

Total time required before emergence as an adult is $4 + 12 + 8 = 24\text{ days}$. Starting from 1st March, adding 24 days gives 25th March.

Asked in: Homi Bhabha Practice

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