The compound interest on a sum of money for $3$ years at $5 \%$ per annum is ₹ $1324.05$. What is the simple interest (in ₹)?

The compound interest on a certain sum of money for $2$ years at $5 \%$ per annum is ₹ $410$. The simple interest (in ₹) on the same sum at the same rate and for the same time is:

Sam invested ₹ $15000$ at $10 \%$ per annum for one year. If the interest is compounded half-yearly,then the amount (in ₹) received by Sam at the end of the year will be:

Sita deposited $Rs. 5000$ at $10\%$ simple interest for $2$ years. How much more money (in $Rs.$) will Sita have in her account at the end of $2$ years,if it is compounded semi-annually?

What sum will amount (in ₹) to ₹ $15916.59$ in $3$ years at compound interest,if the interest rates for the first,second,and third year are $3\%$,$2\%$,and $1\%$ respectively?

The compound interest (in ₹) on ₹ $12000$ for $9$ months at $20 \%$ per annum,interest being compounded quarterly,is