Solution:

Given:
- Cost price \((C_p)\) of 12 eggs = Rs. 960

To find:
- Cost price of 1 egg = \([tex]\(\frac{960}{12} = Rs. 80\)[/tex]\)

Selling price \((S_p)\) of 20 eggs = Rs. 18

- Cost price of 20 eggs = \([tex]\(20 \times 80 = Rs. 1600\)[/tex]\)

Since \([tex]\(S_p < C_p\)[/tex]\), this is a loss scenario, not profit.

To correct:

Loss per egg = Cost price per egg - Selling price per egg
Loss per egg = \([tex]\(80 - \frac{18}{20} \times 80 = 80 - 72 = Rs. 8\)[/tex]\)

Profit percentage is not applicable here. Instead, calculate the loss percentage:
\[
\text{Loss percentage} = \left(\frac{\text{Loss}}{\text{Cost Price}}\right) \times 100\%
= \left(\frac{8}{80}\right) \times 100\%
= 10\%
\]

Sure! Let's go through the question and determine whether there is a profit or not, step-by-step:

1. Cost Price Calculation:
- The cost price (C.P.) of 12 eggs is Rs. 960.
- To find the cost price per egg, we divide the total cost by the number of eggs:
[tex]\( \text{C.P. per egg} = \frac{960}{12} = 80 \)[/tex]
So, each egg costs Rs. 80.

2. Selling Price Calculation:
- The selling price (S.P.) of 20 eggs is Rs. 18.
- To find the selling price per egg, we divide the total selling price by the number of eggs:
[tex]\( \text{S.P. per egg} = \frac{18}{20} = 0.9 \)[/tex]
So, each egg is sold for Rs. 0.9.

3. Profit or Loss Calculation:
- Compare the selling price per egg with the cost price per egg.
- The cost price per egg is Rs. 80, which is much higher than the selling price per egg, which is Rs. 0.9.

4. Conclusion:
- Since the selling price per egg is less than the cost price per egg, it results in a loss.
- Hence, there is no profit in this transaction.

This step-by-step explanation outlines the process of comparing the cost price and selling price per egg to determine whether there is a profit or loss in the transaction.