Correct Answer - Option 4 : 50%
Given∶
An offer, ‘Buy 3 get 3 free’.
Formula Used∶
Discount = Marked Price – Selling Price
Discount % = (Discount / Marked Price) × 100
Calculation∶
Let cost of 1 article be Rs. 100
Total number of articles got = 3 + 3 = 6
Number of articles purchased = 3
M.P. of 6 articles = 100 × 6 = Rs. 600
S.P. of 3 articles = 100 × 3 = Rs. 300
Discount = M.P. – S.P.
⇒ 600 – 300
⇒ Rs. 300
Discount % = (Discount / M. P.) × 100
⇒ (300 / 600) × 100
⇒ 50 %
∴ The net percentage of discount is 50%.