In the Bargaining Bazar everyone purchase with a fair bargaining, so the traders markup the prices too much. A trader marked up an article at Rs. M expected huge profit if it is sold on marked price. But a customer purchased it at $$\frac{{\text{M}}}{2}$$ with his fine bargaining skills, so the expected profit of the trader diminished by 66.66%. What is the percentage discount fetched by the customer through bargaining?

A. 33.33%

B. 50%

C. 60%

D. 66.66%

E. None of these

Answer: Option B

Solution(By Examveda Team)

$$\eqalign{ & {\text{MP}} = M \cr & {\text{SP}} = \frac{M}{2} \cr & \% \,{\text{Discount}} \cr & = {\frac{{ {\frac{M}{2}} }}{M}} \times 100 \cr & = 50\% \cr} $$