Albert invested an amount of ₹ $8000$ in a fixed deposit scheme for $2$ years at compound interest rate of $5 \%$ per annum. How much amount (In ₹) will Albert get on maturity of the fixed deposit?

An amount of ₹ $12500$ is deposited for a period of $2$ years at an interest of $4 \%$ per annum. Find the difference between simple interest and compound interest (In ₹) $10$ for the deposit.

The simple interest accrued on an amount of $Rs. 19800$ at the end of $3$ years is $Rs. 7128$. What would be the compound interest (In $Rs.$) accrued on the same amount at the same rate in the same period?

$B$ borrow ₹ $5,000$ from $A$ at $6 \%$ p.a. simple interest and lends it to $C$ at compound interest of $10 \%$ p.a. If $B$ collects the money back from $C$ after $2$ years and repays $A ,$ the profit made by $B$ in the transaction is (In ₹)

The difference between simple and compound interest on sum of $10000$ is $64$ for $2$ years. Find the rate of interest.

The least number of complete years in which a sum of money put out at $20 \%$ compound interest will be more than doubled is