Waheeda bought an air cooler for ₹3,300 including a tax of 10%. Find the price of the air cooler before tax was added.

Correct option is C

Given:
Final price including tax = ₹3,300
Tax rate = 10%
Formula Used:
The final price after adding tax is calculated as:
Final Price = Original Price + 10% of Original Price = 110% of Original Price
Original Price =  $$\frac{\text{Final Price} \times 100}{110}$$​​
Solution:
Original Price = $$\frac{3300 \times 100}{110} = \frac{330000}{110} = ₹3,000$$​​