₹1,200 ची रक्कम 4% प्रतिवर्ष साध्या व्याजाने ₹2,280 होण्यासाठी किती कालावधी (वर्षांमध्ये) लागेल?

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 1)
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  1. 23.5
  2. 24.5
  3. 21.5
  4. 22.5

Answer (Detailed Solution Below)

Option 4 : 22.5
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दिले आहे:

मूळ रक्कम (P) = ₹1,200

एकूण रक्कम (A) = ₹2,280

दर (r) = 4% प्रतिवर्ष

वापरलेले सूत्र:

सरळ व्याज (SI) = P x r x t / 100

⇒ SI = A - P

गणना:

SI = A - P

⇒ SI = ₹2,280 - ₹1,200 = ₹1,080

SI = P x r x t / 100 वापरून:

⇒ ₹1,080 = ₹1,200 x 4 x t / 100

⇒ ₹1,080 = ₹48 x t

⇒ t = 22.5 वर्षे

∴ योग्य उत्तर पर्याय (4) आहे.

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