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6.Interest
easy
Find the present (In ₹) worth of ₹ $9261$ due $3$ years, hence at $5 \%$ per annum compounded yearly.
A
$7000$
B
$8000$
C
$9000$
D
None of these
Solution
(b) Here, $A=9261, t=3$ and $R=5$
$\begin{aligned} \therefore \quad P &=\frac{A}{\left(1+\frac{R}{100}\right)^{t}}=\frac{9261}{\left(1+\frac{5}{100}\right)^{3}} \\ &=\frac{9261 \times 20 \times 20 \times 20}{21 \times 21 \times 21}=₹ 8000 \end{aligned}$
Standard 13
Quantitative Aptitude