A certain sum of money (In $Rs.$) gives $Rs. 500$ at $5 \%$ S.I. for 1 year. What is the $C.I.$ at the same rate at the end of $2$ years?

If the difference between $S.I.$ and $C.I.$ is $Rs. 25$ on $10000$ for $2$ years then what is rate of interest?

The compound interest (In ₹) on ₹ $5,000$ for $3$ years at $10 \%$ per cent will amount to

Raghu invested a certain sum in Scheme $X$ for $4$ years.Scheme $X$ offers simple interest at $12$ per cent pa for the firsttwo years and compound interest (compounded annually) at $20$ per cent pa for the next two years. The total interest earned by him after $4$ years is ₹ $11016 .$ What was the sum (In ₹) invested by Raghu in Scheme $X ?$

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 bank offers $5 \%$ compound interest calculated on half-yearly basis. A customer deposits $Rs. 1600$ each on $1^{st}$ January and $1^{st}$ July of a year. At the end of the year, the amount (In $Rs.$) he would have gained by way of interest is