| The cost price of 40 articles is the same as the selling price of 25 articles. The gain per cent is [SSC (CGL) 2012] |
A) 65%
B) 60%
C) 15%
D) 75%
Correct Answer: B
Solution :
| Let the CP of 1 article = Rs. x |
| \[\therefore \]CP of 40 articles \[=40x\] |
| and SP of 25 articles \[=40x\] |
| \[\therefore \] SP of 1 article \[=\frac{40x}{25}\]or \[\frac{8x}{5}\] |
| \[\text{Gain}\,\,\text{=}\,\,\text{SP}-\text{CP}=\frac{8x}{5}-x=\frac{3x}{5}\] |
| Gain % = \[\frac{Gain\times 100}{CP}\] |
| \[=\frac{\frac{3x}{5}\times 100}{x}=20\times 3=60\]% |
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