Question

Bacterial cell divides every two minutes. It takes 20 minutes a cup to be one-fourth full. How much time it will take to fill the cup?

• A. 24 minute
• B. 60 minute
• C. 40 minute
• D. 50 minute

Answer 1

The correct option is A 24 minute

In 20 minutes the bacterial cell no = 1/4 th of the cup

in 22 minutes the bacterial cell no = 1/4 multiplied by 2 = 1/2 of the cup

in 24 minutes the bacterial cell no = 1/2 multipled by 2= 1 full cup of bacteria

as each bacterial cell divides into 2 in two minutes given

So, the correct option is 'A'.