A sum of ₹ $15000$ deposited at compound interest becomes double after $5$ $years.$ After $20$ $years$, it will become (In ₹)
$120000$
$150000$
$155000$
$240000$
The compound interest (In ₹) on ₹ $10000$ at $20 \%$ per annum at the end of $1$ year $6$ months if the interest is calculated half-yearly will be
The $S.I.$ is $Rs. 7200$ on $12$ $p.c.p.a.$ for $6$ years on a sum. What is $C.I.$ (In $Rs.$) on $5$ $p.c.p.a$ for $2$ years?
A certain sum of money at compound interest grows up to ₹ $12960$ in $2$ years and up to ₹ $13176$ in $3$ years. Find the rate per cent per annum.
Sonika invested an amount of ₹ $5800$ for $2$ years. At what rate of compound interest ($\%$ $per$ $annum$) will she get an amount of ₹ $594.5$ at the end of two years?
The population of a state increases by $10 \%$ every year. If its population in the year $2003$ was $15$ lakhs, what was its population in the year $2005$ (in $lakhs$)?