Quantitative Aptitude Ques 926

Question: The cost price of 18 articles is equal to the selling price of 15 articles. The gain per cent is

Options:

A) 25%

B) 20%

C) 18%

D) 15%

Show Answer

Answer:

Correct Answer: B

Solution:

  • Let the CP of 1 article $ =Rs.,x $

$ \therefore $ CP b of 18 articles $ =Rs\text{.18}x $ and SP of 15 articles $ =Rs\text{.18}x $

$ \therefore $ SP of 1 article $ =\frac{18x}{15} $ $ Profit=SP-CP=\frac{18x}{15}-x=\frac{3x}{15}=\frac{x}{5} $

$ \therefore $ $ Profit%=\frac{Profit\times 100}{CP} $ $ =\frac{\frac{x}{5}\times 100}{x}=20 $ %

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