2. Sample Papers
  3. Railways
  4. Quantitative Aptitude
  5. Profit and Loss

Railways Quantitative Aptitude Profit and Loss Sample Paper Profit and Loss Sample Test Paper-9

  • question_answer
    Rekha sold a watch at a profit of 15%. Had he bought it at less and sold it for Rs. 28 less. He would have gained 20% The C.P. of the watch is

    A)  Rs. 250

    B)  Rs. 400

    C)  Rs. 425

    D)  Rs. 450

    Correct Answer: B

    Solution :

    [b] Let CP = Rs. x First SP = 115% of \[x=\frac{23}{20}x\] second CP = 90% of \[x=\frac{9x}{10}\] second SP = 120% of \[\frac{9x}{10}=\frac{120}{100}\times \frac{9x}{10}\] \[=\frac{27x}{25}\] It is given that \[\frac{23x}{20}-\frac{27x}{25}=28\] \[\Rightarrow \] \[\frac{115x-108x}{100}=28\] \[\Rightarrow \] \[x=\frac{28\times 100}{7}=Rs.400\]


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