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Ritu has a Recurring Deposit Account in a bank and deposits Rs. 80 per month for 18 months. Find the rate of interest paid by the bank if the maturity value of the account is Rs. 1,554. - Mathematics

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प्रश्न

Ritu has a Recurring Deposit Account in a bank and deposits Rs. 80 per month for 18 months. Find the rate of interest paid by the bank if the maturity value of the account is Rs. 1,554.

योग
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उत्तर

MV = P × n + Interest

Given:

  • P = 80

  • n = 18

  • MV = 1554

Total deposit = P × n = 80 × 18 = 1440

Interest = MV − Total deposit = 1554 − 1440 = 114

`114 = (80xx18xx19xxR)/(2xx12xx100)`

`114 = (27360 xx R)/2400`

114 × 2400 = 27360 × R ⇒ 273600 = 27360 × R

`R = 273600/27360 = 10`

10%

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