Multiple choice

A person bought 50 pens for Rs. 50 each. He sold 40 of them at a loss of 5%. He wants to gain 10% on the whole. Then his gain percent on the remaining pens should be - एक व्यक्ति ने 50 पेन 50 रू. प्रति पेन की दर से खरीदे। उसने 40 पेन 5% हानि पर बेच दिये। अब वह अगर 10% कुल लाभ का आकांक्षी हो, तो उसे शेष पेन कितने प्रतिशत लाभ पर बेचने होंगे?

  1. 15

  2. 40

  3. 50

  4. 70
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cost = 50 × 50 = 2500. Desired profit = 10% of 2500 = 250. Target amount = 2750. Sold 40 pens at 5% loss: 40 × 50 × 0.95 = 1900. Remaining 10 pens must sell for: 2750 - 1900 = 850. Per pen = 85. Profit per remaining pen = 85 - 50 = 35. Profit % = 35/50 × 100 = 70%.

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