Final answer:
Using the VAT paid to backtrack the original price of the flag, it turns out the discount amount is Rs 300, not matching any of the options provided. The question may contain an error as the calculated discount doesn't align with the listed choices.
Step-by-step explanation:
To calculate the original price of the Nepali flag before VAT was added, we can start by using the amount paid for VAT, which is Rs 170 representing 10% of the price after the discount is applied. To find the price before VAT (discounted price), we divide Rs 170 by 0.10, which gives us Rs 1700.
Now, we know this discounted price is after a 15% discount has been applied. So, this is 85% of the original price. To find the original price, we divide Rs 1700 by 0.85 which gives us Rs 2000.
Finally, to find the discount amount, we calculate the 15% of Rs 2000. That is Rs 2000 x 0.15, which is Rs 300. Among the given options for the discount amount, none match Rs 300, therefore the question might contain a mistake or there might be a misunderstanding.