Correct Answer - Option 1 : 20%
Given:
An offer of “Buy 4 Get 1 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 5 goods = 5x
Discount on 5 goods = Rs. x
⇒ Discount on 1 good = Rs. x/5
⇒ Net discount % = {(x/5)/x} × 100 = 20%
∴ Net discount is equal to 20%.