Correct Answer - Option 3 : Rs. 1125

**Given:**

Marked price = Rs. 1500

Discount = 10%

Profit = 20%

**Formula used:**

SP = MP × [(100 – Discount%)/100]

CP = SP × [100/(100 + Gain%)]

**Calculation:**

SP = Rs. 1500 × [(100 – 10)/100]

⇒ Rs. 1500 × (90/100)

⇒ Rs. 1350

CP = Rs. 1350 × [100/(100 + 20)]

⇒ Rs. 1350 × (100/120)

⇒ Rs. 1125

**∴ The cost price of article is Rs. 1125**