Correct Answer: 4 percent

Solution : Given,
Marked price of the computer = Rs. 80,000,
Selling price after two discounts = Rs. 65,280,
First discount = 15%
Let the second discount be $x$%.
⇒ Selling price after the first discount = Marked price – $\frac{15}{100} ×$ Marked price
⇒ Selling price after the first discount = 80,000 – $\frac{15}{100} ×$ 80,000 = 80000 – 12000 = Rs. 68000
⇒ Selling price after the second discount = Selling price after the first discount – $\frac{x}{100} ×$ Selling price after the first discount
⇒ Selling price after the second discount = 68000 – $\frac{x}{100}×$ 68000 = Rs. 65,280
According to the question,
$68000 -\frac{x}{100} × 68000 = 65280$
⇒ $\frac{x}{100} × 68000 = 68000 - 65280$
⇒ $x × 680 = 2720$
⇒ $x= 4$%
Hence, the correct answer is 4 percent.