চক্রবৃদ্ধি সুদে জমা করা 12,000.00 টাকা 5 বছরের শেষে দ্বিগুণ হয়ে যায়। 15 বছর শেষে অর্থের পরিমাণ কত হবে?

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  1. 1,08,000.00 টাকা
  2. 84,000.00 টাকা
  3. 1,20,000.00 টাকা
  4. 96,000.00 টাকা

Answer (Detailed Solution Below)

Option 4 : 96,000.00 টাকা
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Detailed Solution

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প্রদত্ত:

মূলধন = 12000 টাকা

সময় = 5 বছর

অনুসৃত সূত্র:

সুদ-আসল = মূলধন × (1 + r/100)n

গণনা:

সুদ-আসল = মূলধন × (1 + r/100)5

⇒ 24000 = 12000 × (1 + r/100)5

⇒ 24000/12000 = (1 + r/100)5

⇒ 2 = (1 + r/100)5                                 (1)

⇒ 15 বছর শেষে,

⇒ সুদ-আসল = 12000 × (1 + r/100)15

⇒ সুদ-আসল = 12000 × [(1 + r/100)5]3                      (1 থেকে)

⇒12000 × 23

⇒12000 × 8

⇒ 96000

∴ 15 বছর শেষে সুদ-আসল হবে 96000 টাকা

Shortcut Trick  F1 Ravi Ravi 17.11.21 D14

∴ 15 বছর শেষে সুদ-আসল হবে 12000-এর 8 গুণ = 96000 টাকা

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