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If the quarterly interest rate is r% then

(1 + r/100)28 = 3

=> (1 + r/100) = 31/28 = 1.040016 approx

=> r/100 = 0.040016 approx

so r = 4.0016% approx

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Q: What rate compounded quarterly will triple any sum in 7 years?
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$194.25 if interest is compounded annually. A little more if compounded quarterly, monthly, or daily.


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How do you solve compound interest question with example?

Compound Interest is the interest which gets compounded in Specified time periods.. The formula for solving Compound Interest problems is as follows: A=P(1+R/100)n Where, A= Amount after Including Compound Interest P= Principle R= Rate % n= Time Period For Calculating Compound Interest: CI=A-P Where, CI= COmpound Interest A= Amount P= Principle For Eg: If Rs 1000 is lend @ 10% Compounded Anually for 2 years, then calculation will be done as follows: A= 1000 (1+10/100)2 = 1000 (1.1)2 = Rs 1210 & Compound Interest will be A-P i.e. Rs 1210-1000= Rs 210. Also, Whenever Compounded Half Yearly or Compounded Quarterly is given, the rate will be divided by 2 & 4 respectively & time period will be multiplied by 2 & 4 respectively. For Eg: if in the above eg, Compounded Half yearly is given, then take R= 5%, n = 4 years (4 half years in 2 years) & if Compounded Quarterly is given, then, take R= 2.5%, n= 8 (8 quarters in 2 years)

Related questions

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