A and B do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?​

Explanation

To solve the problem step by step, we will follow these calculations:

### Step 1: Determine the work rates of A and B
- A can complete the work in 20 days. Therefore, A's work rate is:
\[ \text{Work rate of A} = \frac{1}{20} \text{ (work per day)} \]
- B can complete the work in 15 days. Therefore, B's work rate is:
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