What is the effective discount percent if a shopkeeper offers a scheme “Buy five and get three free”?

Correct option is A

Given:
Buy 5, get 3 free
Formula Used:
​$$\text{Discount \%} = \frac{\text{Free items}}{\text{Total items}} \times 100$$​​
Solution:
Total items = 5 + 3 = 8
Free items = 3
Discount % = $$\frac 38$$​ × 100 = 37.5%