A) 35%
B) 45%
C) 40%
D) 50%
Correct Answer: D
Solution :
Selling price of 4 articles = cost price of 6 articles then gain per cent = \[\frac{\text{No}\text{.}\,\text{of}\,\text{articles}\,\text{on}\,\text{CP-No}\text{.}\,\text{of}\,\text{articles}\,\text{on}\,\text{SP}}{\text{No}\text{.}\,\text{of}\,\text{article}\,\text{on}\,\text{SP}}\times 100\]\[\therefore \]gain per cent \[=\frac{6-4}{4}\times 100%=\frac{2}{4}\times 100%=50%\]
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