Profit and Loss - Quantitative Aptitude (MCQ) questions for Q. 126

Q.  A person sells a book for Rs. 11. He gains as many percent as its cost price in rupees. What is the cost price?
- Published on 15 Jun 15

a. Rs. 10
b. Rs. 12
c. Rs. 7.50
d. Rs. 5.50

ANSWER: Rs. 10
 

    Discussion

  • Indranil   -Posted on 06 Nov 18
    Take the factor of 11 in such a manner that the difference of the two factors should be 10.
    Factors of 11 = 11 x 1.
    Now, multiply the lower number by 10 if it is a profit or the higher number with 10 if it is a loss to get the CP.
    Therefore, the final CP = 1 x 10 = 10.

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