Multiple Choice Questions on If the number of magazines sold by person A in 2010 is increased by x then the total number of magaz........... for IBPS RRB - Office Assistant/ Clerical Exam Preparation

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Multiple Choice Questions

If the number of magazines sold by person A in 2010 is increased by x then the total number of magaz...........

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    Directions: The following table shows the number of magazines sold by the four different persons A, B, C and D in three different years 2010, 2011 and 2012. 

    Name of persons      Number of magazine sold in 2010      Number of magazine sold in 2011      Number of magazine sold in 2012 

            A                                           20                                                          18                                                         12

            B                                           16                                                          24                                                         15

            C                                           30                                                         14                                                          21

             D                                          25                                                          15                                                        10   

    If the number of magazines sold by person A in 2010 is increased by x% then the total number of magazines sold by person A in all the three years is 55. Find the value of x. 

    This questions was previously asked in
    RRB Clerk Prelims (19 Aug, 2023 Shift 1)
    View All RRBB Previous Year Papers

    20% 

    Incorrect Answer

    15%

    Incorrect Answer

    25% 

    Correct Answer

    12% 

    Incorrect Answer

    18%

    Incorrect Answer
    Explanation:

    - Let's evaluate the problem step-by-step.

    - In 2010, person A sold 20 magazines.

    - An increase by \(x\%\) in 2010 should make A's total sales over the three years equal 55 when added with 2011 and 2012 sales.

    - The formula to calculate the increased sales in 2010 is: \(20 + \dfrac{x}{100} \times 20\)

    - Hence, the total for three years should be: \((20 + \dfrac{x}{100} \times 20) + 18 + 12 = 55\)

    - This simplifies to \(50 + 0.2x = 55\)

    - Solving: \(0.2x = 5\), thus \(x = 25\%\).

    Correct Answer: Option:3, 25%

    By: Parvesh Mehta
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