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      Question

      A bank balance increases by 10% every year due to

      interest. If the balance after 2 years will be โ‚น24,200, find the original amount deposited.
      A 25028 Correct Answer Incorrect Answer
      B 23320 Correct Answer Incorrect Answer
      C 12530 Correct Answer Incorrect Answer
      D 20000 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let, the present balance be โ€˜xโ€™.

      ATQ,

      So, the balance after 2 years = 1.10 ร— 1.10 ร— x = 24200

      Or, x = 24200 ร— (1/1.10) ร— (1/1.10)

      So, x = โ‚น20,000

      Therefore, the original amount deposited = x = โ‚น20,000

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