What would be the compound interest (In ₹) accrued on an amount of ₹ $7,400$ @ $13.5$ $p.c.p.a.$ at the end of two years? (rounded off to two digits after decimal)

If the ratio of $C.I. \& S.I.$ interest for the same principal and rate of interest for $2$ years is $1.2,$ find the rate of interest (In $\%$)

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 $B$?

A man borrows $Rs. 5100$ to be paid back with compound interest at the rate of $4 \%$ pa by the end of $2$ years in two equal yearly instalments. How much (In $Rs.$) will be each instalment?

Find the least number of complete years in which a sum of money put out at $20 \%$ compound interest will be more than double?

Find the difference between $S.I.$ and $C.I.$ (In $Rs.$) at $12 \%$ for $2$ year on $Rs. 10000$