28 The online seller selling the bag in online at rupee 2000, with already

20% of discount and after placing the order he gives additional 10% discount.

So find the actual selling cost of the bag?

1. A

   1440

2. B

   1320

3. C

   1600

4. D

   1200

Appeared in: NORCET 1 - 2020

Explanation

Listen in Hindi

• The problem involves calculating the final price after two successive discounts.
• The first discount of 20% is applied to the initial price of Rs. 2000, resulting in a price of Rs. 1600.
• The second discount of 10% is then applied to this new price of Rs. 1600, not the original Rs. 2000.
• Calculation: Rs. 1600 - (10% of Rs. 1600) = Rs. 1600 - Rs. 160 = Rs. 1440.
• Therefore, the actual selling cost of the bag is Rs. 1440.

Why Other Options Were Wrong

• Option B: This is an incorrect calculation and does not correspond to any logical step in the successive discount method.
• Option C: This is the price after applying only the first 20% discount (2000 - 400 = 1600). It fails to account for the second, additional 10% discount.
• Option D: This is an incorrect calculation. A common error is to incorrectly apply the discounts, for example, by taking 40% off (20% x 2), which would be 2000 - 800 = 1200. This is not how successive discounts work.

Related Visual

• Visual 1: Flowchart: Illustrating the step-by-step calculation of successive discounts. Start with the initial price, show the first discount calculation leading to an intermediate price, and then show the second discount calculation leading to the final price.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Calculation of final price after successive discounts as background academic context rather than a clinical decision trigger.
• This question tests quantitative aptitude, a non-clinical skill essential for problem-solving and critical thinking in various contexts.
• While not directly related to patient care, mathematical proficiency is important for nurses in areas like medication dosage calculation, interpreting lab results, and managing resources.
• What if the discounts were applied in the reverse order (10% first, then 20%)? The result would be the same: 2000 * 0.90 = 1800; 1800 * 0.80 = 1440. The order of successive percentage discounts does not change the final outcome.

How to Approach the Question

• First, identify the initial price and the two separate discount percentages.
• Calculate the amount of the first discount and subtract it from the initial price to find the intermediate price.
• Next, calculate the second discount based on the new intermediate price, not the original price.
• Subtract the second discount amount from the intermediate price to find the final selling price.
• Compare your calculated final price with the given options to select the correct answer.

Concept Tested & Keywords

• Concept Tested: Calculation of final price after successive discounts
• Stem keywords: online seller, bag, rupee 2000, 20% discount, additional 10% discount
• Lead-in keywords: find the actual selling cost

Question ID

QfzT1nIfVsQVcMazNdxAae

Copy ID