Explanation:

- Let's break down how the profit per packet was calculated initially.

- X marks up the bread price by 150%.

- After allowing a 40% discount, he makes a Rs. 30 profit per packet.

- If we consider the cost price as 'C', the marked price becomes 2.5C.

- Applying a 40% discount brings the selling price to 1.5C (after calculating it).

- Since the profit is Rs. 30, we conclude that cost price (C) = Rs. 60 per packet.

- Now at a 37.5% discount, selling price becomes 2.5C * (1 - 0.375) = Rs. 93.75.

- Profit per packet = Selling Price - Cost Price = Rs. 93.75 - Rs. 60 = Rs. 33.75.

- Selling 80 packets results in a profit of Rs. 33.75 * 80 = Rs. 2,700.

- Option 4: Rs. 2700