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6.Interest
medium
Sam invested ₹ $15000$ at $10 \%$ per annum for one year. If the interest is compounded halfyearly, then the amount (In ₹) received by Sam at the end of the year will be
A
$16500$
B
$16525.50$
C
$16537.50$
D
$18150$
Solution
$A=P\left(1+\frac{R}{100}\right)^{N}$
$=15000\left(1+\frac{10}{200}\right)^{2}=15000\left(1+\frac{5}{100}\right)^{2}$
$=15000 \times\left(\frac{21}{20}\right)^{2}=\frac{15000 \times 441}{400}$
$=37.5 \times 441=₹ 16537.50$
Standard 13
Quantitative Aptitude