$270$ candidates appeared for an examination,of which $252$ passed. The pass percentage is (in $\%$)?

The value of a machine depreciates at the rate of $10 \%$ every year. It was purchased $3$ years ago. If its present value is $₹ 8748$,what was its purchase price?

The length of a rectangle increases by $20 \%$ and the breadth by $30 \%$. Then the perimeter of the rectangle will increase by:

Sonu invested $10 \%$ more than Mona. Mona invested $10 \%$ less than Raghu. If the total sum of their investments is ₹$5,780$,how much amount did Raghu invest?

Visions Pvt. Ltd. appoints a sales representative on a basic salary of $Rs. 1200$ per month, with the condition that for every $Rs. 10000$ of sales made above the initial $Rs. 10000$, he will receive $50\%$ of his basic salary and $10\%$ of that specific $Rs. 10000$ sales as a reward. There is no incentive for the first $Rs. 10000$ of sales. What should be the total value of sales if the sales representative wants to earn $Rs. 7600$ in a particular month?

Aditya's salary is $125\%$ of Ram's salary. Sanjay's salary is $80\%$ of Ram's salary. If the total of all the three salaries is $Rs. 61000$,what is Sanjay's salary?