S यांनी दोन खात्यांमध्ये एकूण ₹50,000 जमा केले आहेत, जी अनुक्रमे वार्षिक 8% आणि 12% सरळव्याज देतात. एक वर्षानंतर, त्यांना एकूण ₹5,200 मिळतात. तर त्यांनी 12% व्याजदर असलेल्या खात्यात किती रक्कम जमा केली आहे?

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SSC CGL 2023 Tier-I Official Paper (Held On: 25 Jul 2023 Shift 4)
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  1. ₹30,000
  2. ₹32,000
  3. ₹20,000
  4. ₹25,000

Answer (Detailed Solution Below)

Option 1 : ₹30,000
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Detailed Solution

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दिलेले आहे:

मुद्दल (P) = ₹50,000

पहिला व्याजदर = 8%; दुसरा व्याजदर = 12%

एकूण सरळव्याज (SI) = ₹5,200

वापरलेले सूत्र:

सरळव्याज (SI) = (P × R × T)/100

येथे, P = मुद्दल; R = व्याजदर; T = मुदत

गणना:

समजा, 12% व्याजदरावर असलेली रक्कम = x

तर, 8% व्याजदरावर असलेली रक्कम = (50,000 - x)

प्रश्नानुसार:

⇒ (50,000 - x) × 8% + x × 12% = 5200

⇒​ (50,000 × 8%) - (x × 8%) + (x × 12%) = 5200

⇒ (x × 4%) = 5200 - 4000

⇒ x = (1200 × 100)/4 = 30000 रुपये

30000 हे योग्य उत्तर आहे.

Shortcut Trickगणना:

एकूण व्याजदर = (5200 × 100)/50000 = 52/5 = 10.4%

F1 SSC Arbaz 6-10-23 D11

आता

8% वरील रक्कम : 12% वरील रक्कम = 1.6 : 2.4

⇒ 2 : 3

⇒ 5 एकक = 50000

⇒ 3 एकक = (50000 × 3)/5 = 30000 रुपये

∴ 30000 हे योग्य उत्तर आहे.

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