Correct Answer - Option 1 : 28.57%

**Given:**

An offer of “Buy 5 Get 2 free” is given.

**Concepts used:**

M.P. = S.P. + Discount

Discount % = Discount/M.P. × 100

**Calculation:**

Let M.P. of 1 good be Rs. x.

M.P. of 7 goods = 7x

Discount = Rs. 2x

⇒ Net discount % = {(2x)/7x} × 100 = 28.57%

**∴**** Net discount is equal to 28.57%. **