Pipe A can fill a cistern in `1/6` hours and pipe B can fill it in `1/8` hours. Both the pipes are opened and after two hours, pipe A is closed. How much time will B take to fill the remaining part of the tank?

Explanation

To solve the problem step by step, we can follow these instructions:

### Step 1: Determine the rates of Pipe A and Pipe B

- Pipe A can fill the cistern in \( \frac{1}{6} \) hours, which means it can fill \( 1 \) cistern in \( 6 \) hours.
- Therefore, the rate of Pipe A is \( \frac{1}{6} \) cisterns per hour.

- Pipe B can fill the cistern in \( \frac{1}{8} \) hours, which means it can fill \( 1 \) cistern in \( 8 \) hours.
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