The compound interest (In ₹) on ₹ $2000$ at $5 \%$ per annum, compounded yearly, for $2$ years is
$315$
$425$
$205$
None of these
A sum of money, deposited at some rate $p.c.p.a.$ of compound interest, doubles itself in $4$ years. In how many years will it become $16$ times of itself at the same rate?
The compound interest (In ₹) on ₹ $800$ in $2 \frac{1}{2}$ years at $5 \%$ is
Nikita invested ₹ $8000$ for $3$ years at $5 \%$ $C.I.$ in a post office. If the interest is compounded once in a year, what sum (In ₹) will she get after $3$ years?
If the compound interest on a sum for $2$ years at $12 \frac{1}{2} \%$ per annum is ₹ $510,$ the simple interest (In ₹) on the same sum at the same rate for the same period of time is.
On a certain sum of money, the simple interest for $2$ years is ₹ $200$ at the rate of $7 \%$ per annum. Find the difference in $C I$ and $S I .$ (In ₹)