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प्रश्न
The simple interest earned on a certain sum in 5 years is 30% of the sum. Find the rate of interest.
योग
उत्तर
Let the sum (P) = ₹ 100
S.I. = `30/100 xx ₹ 100` = ₹ 30
Period (T) = 5 years
∴ Rate = `("S.I." xx 100)/("P" xx "T") = (30 xx 100)/(100 xx 5) = 6 %`
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