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Naseem Has a 5 Years Recurring Deposit Account in Punjab National Bank and Deposit? Rs. 240 per Month. If She Receives Rs. 17,694 at the Time of Maturity Find the Rate of Interest. - Mathematics

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प्रश्न

Naseem has a 5 years Recurring Deposit account in Punjab National Bank and deposit? Rs. 240 per month. If she receives Rs. 17,694 at the time of maturity find the rate of interest.

योग
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उत्तर

Here if r% be the rate of interest.
Maturity value
= ₹(240 x 60) + ₹`(240 xx (60 xx 61)/(2 xx 12) xx r/100)`
17,694 = 14,400 + 366r
366r = 3,294
r = 9%

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