एक बुकशेल्फ का अंकित मूल्य ₹3,100 है, जो क्रय मूल्य से 25% अधिक है। इसे अंकित मूल्य पर 12% की छूट पर बेचा जाता है। लाभ प्रतिशत ज्ञात कीजिए।

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
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  1. 9%
  2. 8%
  3. 10%
  4. 11%

Answer (Detailed Solution Below)

Option 3 : 10%
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Detailed Solution

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दिया गया है:

अंकित मूल्य (MP) = ₹3,100

क्रय मूल्य (CP) = ?

छूट = 12%

अंकित मूल्य, क्रय मूल्य से 25% अधिक है।

प्रयुक्त सूत्र:

1. MP = CP × (1 + 25/100)

2. विक्रय मूल्य (SP) = MP × (1 - छूट/100)

3. लाभ प्रतिशत = [(SP - CP)/CP] × 100

गणना:

MP = CP × (1 + 25/100)

⇒ ₹3,100 = CP × (1.25)

⇒ CP = ₹3,100 / 1.25

⇒ CP = ₹2,480

SP = MP × (1 - छूट/100)

⇒ SP = ₹3,100 × (1 - 12/100)

⇒ SP = ₹3,100 × 0.88

⇒ SP = ₹2,728

लाभ प्रतिशत = [(SP - CP)/CP] × 100

⇒ लाभ प्रतिशत = [(₹2,728 - ₹2,480)/₹2,480] × 100

⇒ लाभ प्रतिशत = [₹248/₹2,480] × 100

⇒ लाभ प्रतिशत = 0.1 × 100

⇒ लाभ प्रतिशत = 10%

∴ सही उत्तर विकल्प (3) है।

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