Respuesta :
Option B = 56.25% is the correct answer.
Explanation:
Let the base price be represented by = x
While using coupon, price becomes =[tex](100-25)x=75[/tex]%
While using existing 25% off sales, price is same =[tex](100-25)x=75[/tex]%
So, the shopkeeper will pay [tex]0.75\times0.75=0.5625[/tex]
This becomes 56.25%
Hence, option B is the answer.