Explanation:

Let’s break this down step by step:

- If the cost price is Rs x, the marked price is 24% higher: Marked price = x + 0.24x = 1.24x

- A 15% discount is given, so selling price = 85% of marked price = 0.85 × 1.24x = 1.054x

- Profit earned is Rs 77, so selling price = cost price + 77 ? 1.054x = x + 77

- That rearranges to: 1.054x – x = 77 ? 0.054x = 77 ? x = 77/0.054 ˜ 1426

- Selling price = 1.054 × 1426 ˜ Rs 1504

Now look at the options:

- Rs 508

- Rs 522

- Rs 517

- Rs 527

Here’s the key: The answer can’t be any of those. Selling price comes out to about Rs 1504, not close to any option. So, . If you had to choose from these, none matches, but your option is not it.