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GMAT Practice Question-Average of Integers

Discussion in 'CAT/MAT/GMAT Preparation' started by Royaluni, Sep 9, 2015.

  1. Royaluni

    Royaluni Administrator

    Qt. The average (arithmetic mean) of the integers from the 200 to 400, inclusive, is how much greater than the average of the integers from 50 to 100, inclusive?

    A. 150

    B. 175

    C. 200

    D. 225

    E. 300

    Answer- In order to address these kind of questions, you first need to identify a middle point between the given series, in our case, and they are;

    200 to 400

    50 to 100

    In first series of 200 to 400, 300 is the middle point and in second series of 50 to 100, 75 is the middle value.

    Now we need to calculate the difference between 300 and 75;

    300-75=225 i.e. option (D) is the correct answer.

    Similar questions are used in problem solving or quantitative section of the most of the mba exams like CAT, MAT etc. So even if you are preparing for some other exam, you can still learn it. And yes, don't forget to share it with your friends on Facebook so that they too can learn it.

    Source-gmat official guide 2016

    Dollar Amount in Question-GMAT Practice Questions
    Last edited: Sep 11, 2015

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