A) Rs. 280
B) Rs.300
C) Rs. 400
D) Rs. 350
Correct Answer: D
Solution :
Cost price of article = Rs. x and selling price of article =Rs. y \[y\times \frac{7}{100}=x\times \frac{8}{100}\] \[\therefore \] \[y=\frac{8x}{7}\] According to the question, \[y\times \frac{9}{100}=x\times \frac{10}{100}=1\] \[\Rightarrow \] \[\frac{8x}{7}\times \frac{9}{100}-\frac{x}{10}=1\] \[\Rightarrow \] \[\frac{18x}{175}-\frac{x}{10}=1\] \[\Rightarrow \] \[\frac{36x-35x}{350}=1\] \[\therefore \] \[x=\]Rs. 350You need to login to perform this action.
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