Sonika invested an amount of ₹ $5800$ for $2$ years. At what rate of compound interest (In $\% p.a.$) will she get an amount of ₹ $594.50$ at the end of two years?

On what sum will the compound interest (In ₹) for $2 \frac{1}{2}$ years at $10 \%$ amount to ₹ $6352.50 ?$

Aditya invested certain amount in two different schemes $A$ and $B$. Scheme $A$ offer $S.I$ @ $12$ $p.c.p.a.$ and scheme $B$ offer $C.I.$ @ $10$ $p.c.p.a.$ Interest accured on the amount invested in scheme $A$ in $2$  years was $Rs. 3600$ and the total amount invested was $Rs. 35000$. What was the interest accured on the amount (In $Rs.$) invested in scheme $B$?

Difference between simple interest and compound interest on a certain sum for $3$ years at $5 \%$ per annum is ₹ $122 .$ Find the sum (In ₹ )

In certain years a sum of money is doubled itself at $6 \frac{1}{4} \%$ simple interest per annum, then the required time (In $years$) will be

A tree increases annually by $\frac{1}{8}$ of its height. By how much will it increase (In $cm$) after $2$ years, if it stands today $64 cm$ high?