Question

In a bowl, the number of marbles gets doubled after every minute. If the bowl gets filled after two hours of such process, how long do you think it will take for it to be half filled.

Answer 1

We will go backward. We know number of marbles doubled after every minute. According to the question we to find how much time it will take for it to be half filled. 

Marble get double every minute. And given after two hours filled completely. So 1 min ago it was filled half. 

So, it was filled half in 1 hours 59 min.

Answer 2

Answer:

Step-by-step explanation:

30 min