When a number is divided by $12$,the quotient is $\frac{1}{4}$ of another number. By what percentage is the first number greater than the second number?

Sunil decided to donate $5 \%$ of his salary. On the day of donation,he changed his mind and donated $₹ 1687.50$,which was $75 \%$ of what he had decided earlier. How much is Sunil's salary?

Pooja invests $13 \%$ of her monthly salary,i.e.,$Rs. 8554$ in Mediclaim Policies. Later she invests $23 \%$ of her monthly salary on Child Education Policies,she also invests another $8 \%$ of her monthly salary on Mutual Funds. What is the total annual amount invested by Pooja?

Aditya has some amount,out of which $25 \%$ is stolen,$10 \%$ he gave to his friend,$50 \%$ of the remainder is spent on a party,and the rest $Rs. 26$ he gave to his mother. What was his initial amount?

The production of a company has ups and downs every year. The production increases for two consecutive years consistently by $15 \%$ and in the third year it decreases by $10 \%$. Again in the next two years it increases by $15 \%$ each year and decreases by $10 \%$ in the third year. If we start counting from the year $1998$,approximately what will be the effect on the production of the company in $2002$?

What is $15$ percent of Rs. $34$?