For the following transaction with Delhi, fill in the blanks to find the amount of bill: MRP= Rs.12000; Discount%=30%; GST= 18%.

Category: Miscellaneous Indian Gk

Hint: Calculate the discount first, then apply GST to the discounted price.

Correct Answer: A) 9912

Exam Relevance: UPSC, SSC, Bank PO, CAT

Difficulty: Moderate

Explanations:

To understand the calculation of the final bill amount after applying a discount and GST, we need to follow a systematic approach. The problem involves an MRP of Rs. 12000, a discount of 30%, and a GST of 18%. The steps to find the final bill amount are as follows:

1. **Calculate the Discount:** - The discount is 30% of the MRP. - Discount amount = 30% of Rs. 12000 = 0.30 × 12000 = Rs. 3600. - The price after discount = MRP - Discount amount = Rs. 12000 - Rs. 3600 = Rs. 8400. 2. **Calculate the GST:** - GST is 18% of the discounted price. - GST amount = 18% of Rs. 8400 = 0.18 × 8400 = Rs. 1512. 3. **Calculate the Final Bill Amount:** - The final bill amount is the sum of the discounted price and the GST amount. - Final bill amount = Discounted price + GST amount = Rs. 8400 + Rs. 1512 = Rs. 9912.

Therefore, the correct final bill amount is Rs. 9912, which corresponds to Option A.

It is important to note the order of operations in financial calculations. The discount is applied first to the MRP, and then the GST is applied to the discounted price. Applying the GST before the discount would result in an incorrect final amount.

Common mistakes include miscalculating the discount or GST, or applying the GST before the discount. These errors can lead to incorrect final bill amounts, as seen in the other options provided.

Option Analysis:

Option A: This is the correct answer. The calculation involves first applying a 30% discount to the MRP of Rs. 12000, resulting in Rs. 8400. Then, 18% GST is applied to Rs. 8400, which results in Rs. 1512. Adding this to Rs. 8400 gives the final bill amount of Rs. 9912.
Option B: This option is incorrect. The mistake here is likely due to a miscalculation of the discount or GST, or an incorrect order of operations.
Option C: This option is incorrect. The error could be due to a rounding mistake or an incorrect application of the discount or GST.
Option D: This option is incorrect. The mistake here is likely due to an incorrect calculation of the discount or GST, or an incorrect order of operations.

Mnemonic: Discount first, then GST

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