Q:

What was the percentage of discount offered?
 I. Profit earned by selling the article for Rs. 252 after giving discount was Rs. 52.
 II. Had there been no discount the profit earned would have been Rs. 80
 III. Had there been no discount the profit earned would have been 40%.

• 1
  I and II only
• 2
  II and either I or III only
• 3
  I and III only
• 4
  I and either II or III only
• 5
  None of these