Find the effective discount for the scheme: Buy 3, get 2 free.

Correct option is B

Given: The scheme is Buy 3, get 2 free.
Formula Used:
​$$\text{Effective Discount (\%)} = \left( \frac{\text{Number of Free Items}}{\text{Total Items after offer}} \right) \times 100$$​​
Solution:
The customer is getting 5 sweaters (3 paid + 2 free) in total.
Effective Discount (%) = $$\frac 25 \times 100$$​
Effective Discount (%) = 40%

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