5%, 15% और 20% की तीन क्रमिक छूटों के समतुल्य एकल छूट है:

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BHEL Supervisor Trainee Civil 21 Jan 2024 Official Paper
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  1. 66.4%
  2. 44.6%
  3. 35.4%
  4. 46.6%

Answer (Detailed Solution Below)

Option 3 : 35.4%
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दिया गया:

5%, 15% और 20% की तीन क्रमिक छूट

गणना:

मान लीजिए प्रारंभिक मान 100 है।

छूट मूल्य = (100 – 5)% का (100 – 15)% का (100 – 20)% का 100

⇒ छूट मूल्य = 100 के 80% के 85% का 95%

⇒ छूट मूल्य = 95/100 × 85/100 × 80/100 × 100

⇒ छूट मूल्य = 19/20 × 17/20 × 80

⇒ छूट मूल्य = (19 × 17 × 80 ) / 400

⇒ छूट मूल्य = (19 × 17) / 5

⇒ छूट मूल्य = 64.6%

तो, एकल छूट प्रतिशत = 100 - 64.6 = 35.4%

∴ सही उत्तर विकल्प (3) है।

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