A virus known to cause a deadly disease, is also a rapid multiplier. It is known that it can double itself every 30 minutes. If a container is completely full of this virus after 50 hours, when was the container half empty?

A. 35 hours

B. 49.5 hours

C. 46 hours

D. 20 hours

Answer: Option B

Solution(By Examveda Team)

In every 30 minutes, Virus doubles it self. It means in 49.5 hours, it would be half empty and it will be full in 50 hours.