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Q30. A beauty products shopkeeper purchased products worth Rs. 12,000 from a company. She sold 1/4thpart of the products at 40% loss. At what gain percentage should she sell the rest of the products so that she accrues neither gain nor loss?

ब्यूटी प्रॉडक्ट की एक दुकानदार ने एक कंपनी से 12,000 रू. मूल्य के प्रॉडक्ट खरीदे। उसने ¼ हिस्सा 40 % की हानि पर बेचा। उसे शेष प्रोडक्ट कितने % लाभ पर बेचना चाहिए ताकि उसे लाभ या हानि न हो?


A

13%

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B

13.33%

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C

12%

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D

16.67%

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Solution

The correct option is B

13.33%


Method I:

Let x be the gain percentage on the rest of the products.

As no profit or loss occurs, Loss amount = Gain amount

Or 12000 × (1/4) × (40/100) = 12000 × (1-1/4) × (x/100)

Or (1/4) × (40/100) = (3/4) × (x/ 100)

Or x = 40/3 = 13.33% gain

Method II:

It is given that, 1/4th part of the products are sold at 40% loss. Thus, Rs 3000 products are sold at loss.

Total loss= 3000 × (40/100)= 1200

Now this loss is to be recovered from remaining sales of Rs. 9000.

So profit percentage has to be = (1200/9000) × 100 = 13.33%

विधि 1:

माना कि शेष उत्पाद पर लाभ प्रतिशत x है।

चूंकि लाभ या हानि, दोनों में से कुछ नहीं होती है, अतः हानि की रमक = लाभ की रकम

या 12000 × (1/4) × (40/100) = 12000 × (1-1/4) × (x/100)

या (1/4) × (40/100) = (3/4) × (x/100)

या x = 40/3 = 13.33 प्रतिशत लाभ

विधि 2:

यह ज्ञात है कि, उत्पाद का 1/4 हिस्सा 40 प्रतिशत की हानि पर बेचा जाता है। इस प्रकार, 3000 रू. के उत्पाद हानि में बेचे जाते हैं।

कुल हानि = 300 × (40/100) = 1200

अब, यह हानि शेष 9000 रूपये की बिक्री से वसूल की जानी है।

इसलिये लाभ प्रतिशत होना है = (1200/9000) × 100 = 13.33 प्रतिशत


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