What would be the $C.I.$ on $Rs. 17500$ at the rate of $12$ $p.c.p.a.$ after $2$ years (In $Rs.$) ?

A sum of money placed at compound interest doubles itself in $5 \,years$. It will amount to eight times itself at the same rate of interest in (In $years$)

A sum of $Rs. 8448$ is to be divided between $X$ and $Y$ who are respectively $18$ and $19 \,yr$ old, in such a way that if their shares be invested at $6.25 \%$ per annum at compound interest, they will receive equal amounts on attaining the age of $21 \,yr$. The present share of $X$ is (In $Rs.$)

What sum will amount (In ₹) to ₹ $15916.59$ in $3$ years at compound interest, the interest for first, second and third year being $3,2$ and $1$ per cent, respectively?

Which information given below is sufficient to know the amount if the difference between the $C.I. \& S.I.$ for $2$ years is $18$?

($I$) The rate is same at which an amount of $Rs. 1000$ become $1120$ for $2$ years in $S.I.$

($II$) The principal given is $Rs. 2000$.

₹ $800$ at $5 \%$ per annum compound interest amount to $₹ 882$ in (In $years$)