2. Sample Papers
  3. Railways

Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-6

  • question_answer
    A man sells a book at a profit of 20%. If he had bought it for 20% loss and if for Rs. 22 less, he would have gained 25%. What is the cost of the book?

    A)  Rs. 78 

    B)  Rs. 90

    C)  Rs. 110 .

    D)  Rs. 122

    Correct Answer: C

    Solution :

    Let the CP of the book = Rs, x \[\therefore \,\] SP of the book \[=\frac{120x}{100}\,=\]Rs. \[\frac{6x}{5}\,\] New CP of the book \[=\frac{x\times 80}{100}=Rs.\frac{4x}{5}\] and new SP of the book =Rs. \[\left( \frac{6x}{5}-22 \right)\] New profit \[=\left( \frac{6x}{5}-22-\frac{4x}{5} \right)=\]Rs. \[\left( \frac{2x}{5}-22 \right)\] \[\therefore \,\]    \[25=\frac{\frac{2x}{5}-22}{\frac{4x}{5}}\times 100\] \[\Rightarrow \,\] \[\,\frac{x}{5}=\frac{2x}{5}-22\Rightarrow \frac{x}{5}=\frac{2x}{5}-22\] \[\Rightarrow \,\] \[x=22\times 5=110\]


You need to login to perform this action.
You will be redirected in 3 sec spinner