₹3,437 में एक अलमारी बेचने पर, लाभ का मान, ₹3,338 में बेचने पर हुई हानि के मान से 75% अधिक है। 50% लाभ प्राप्त करने के लिए, विक्रय मूल्य (₹ में) ज्ञात कीजिए।

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 2)
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  1. 5,059
  2. 5,058
  3. 5,061
  4. 5,062

Answer (Detailed Solution Below)

Option 3 : 5,061
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दिया गया है:

विक्रय मूल्य 1 (SP1) = ₹3,437 (लाभ होता है)

विक्रय मूल्य 2 (SP2) = ₹3,338 (हानि होती है)

लाभ (G) = हानि (L) से 75% अधिक है

आवश्यक लाभ = 50%

प्रयुक्त सूत्र:

लाभ = विक्रय मूल्य - क्रय मूल्य (SP - CP)

नुकसान = क्रय मूल्य - विक्रय मूल्य (CP - SP)

आवश्यक SP = CP × \((1 + \frac{लाभ\%}{100})\)

गणनाएँ:

मान लीजिए CP क्रय मूल्य है।

लाभ (G) = SP1 - CP = 3437 - CP

नुकसान (L) = CP - SP2 = CP - 3338

दिया गया है, लाभ, हानि से 75% अधिक है:

G = L + 0.75L

⇒ G = 1.75L

G और L के व्यंजकों को प्रतिस्थापित कीजिए:

3437 - CP = 1.75 × (CP - 3338)

⇒ 3437 - CP = 1.75CP - 1.75 × 3338

⇒ 3437 - CP = 1.75CP - 5841.5

⇒ 3437 + 5841.5 = 1.75CP + CP

⇒ 9278.5 = 2.75CP

⇒ CP = \(\frac{9278.5}{2.75}\)

⇒ CP = ₹3374

अब, 50% लाभ प्राप्त करने के लिए, नया विक्रय मूल्य (SPनया) होगा:

SP_new = CP × \((1 + \frac{50}{100})\)

⇒ SP_new = 3374 × (1 + 0.5)

⇒ SP_new = 3374 × 1.5

⇒ SP_new = ₹5061

∴ 50% लाभ प्राप्त करने के लिए विक्रय मूल्य ₹5,061 है।

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