​The original price of a TV set is ₹9,000. The price is discounted by 20% and then raised by 10%. What is its new price?​

Correct option is D

Given:

Original price of the TV set: ₹9,000

Discount: 20%

Increase: 10%

Formula used:

Discounted price = Original price − (Original price × Discount) 

New price = Discounted price + (Discounted price × Increase) 

Solution:

The price after the 20% discount:

Discounted price = 9000 − (9000 × 0.20) = 9000 −1800 = 7200

The price after a 10% increase on the discounted price:

New price = 7200 + (7200 × 0.10) = 7200+720 = 7920

So, the new price of the TV set is ₹7,920.

Thus, correct answer is (d) ₹7920