Question

in what time will rs 1200 amount to rs 1323 at 5% per annu compounded anually

Answer 1

hey

gd morning

here is your answer

P=1200 amount=1323 n=2 for calculating R we have formula amount=P(1+(R/100))^n 1323=1200(1+(R/100))^2

(1+(R/100))^2=1.1025  

1+(R/100)=1.05

100+R=105

R=5

so R=5%

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Answer 2

Solution ●●●●
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Given,
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P = ₹ 1200

A = ₹ 1323

R = 5% p.a.
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Let the time be t years
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$We \: \: know \: \: that \:$

$A = P \times (1 + \frac{r}{100} ) {}^{t}$

$= > 1323 = 1200 \times (1 + \frac{5}{100} ) {}^{t} \\ \\ = > \frac{1323}{1200} = (1 + \frac{1}{20} ) {}^{t}$

$= > \frac{441}{400} = ( \frac{21}{20} ) {}^{t} \\ \\ = > (\frac{21}{20} ) {}^{2} = (\frac{21}{20} ) {}^{t} \\ \\ = > t = 2$
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Hence the time is 2 years
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I hope it will help you
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