The compound interest on ₹ $4000$ for $4$ years at $10 \%$ per annum will be (In ₹)

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?

The compound interest accrued on an amount at the end of $3$ $years$ $@$ $15$ $p.c.p.a.$ is $Rs. 6500.52 .$ What is the amount (In $Rs.$) ?

What would be the $C.I.$ obtained on an amount of $12500$ at the rate of $12 \,p.c.p.a.$ after $2$ years (In $Rs.$) ?

The compound interest on a certain sum for $2$ years at $10 \%$ per annum is ₹ $525 .$ The simple interest (In ₹) on the same sum for double the time at half the rate percent per annum is

The simple interest on a certain sum of money for $3$ years at $8 \%$ per annum is half the compound interest on ₹ $4000$ for $2$ years at $10 \%$ per annum. The sum placed on simple interest (In ₹) is