An article was sold for Rs. y after giving a discount of x%. Then, its list price is ?
A. $$\frac{{100y}}{{100 - x}}$$
B. $$\frac{{100y}}{{1 - x}}$$
C. $$\frac{{100y}}{{1 - \left( {x/100} \right)}}$$
D. None of these
Answer: Option A
Solution (By Examveda Team)
Let the list price be Rs. z.$$\eqalign{ & \therefore \left( {100 - x} \right)\% {\text{ of z}} = {\text{y}} \cr & \Rightarrow \left( {\frac{{100 - x}}{{100}}} \right) \times {\text{z}} = {\text{y}} \cr & \Rightarrow {\text{z}} = \left( {\frac{{100{\text{y}}}}{{100 - x}}} \right) \cr} $$
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