1200 টাকা বার্ষিক 4% সরল সুদে কত বছরে 2280 টাকা হবে?

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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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প্রদত্ত:

আসল (P) = 1,200 টাকা 

সুদ আসল (A) = 2,280 টাকা 

সুদের হার (r) = বার্ষিক 4%

ব্যবহৃত সূত্র:

সরল সুদ (SI) = P × r × t / 100

⇒ SI = A - P

গণনা:

SI = A - P

⇒ SI = 2,280 টাকা - 1,200 টাকা = 1,080 টাকা 

SI = P × r × t / 100 ব্যবহার করে:

⇒ 1,080 টাকা = 1,200 টাকা × 4 × t / 100

⇒ 1,080 টাকা = 48 টাকা × t

⇒ t = 22.5 বছর

∴ সঠিক উত্তর হল বিকল্প (4).

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