Multiple Choice Questions on The average of marks obtained by 120 candidates was 35 If the average of marks of passed candi........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The average of marks obtained by 120 candidates was 35 If the average of marks of passed candi...........

Quantitative Aptitude ( CCS) Average
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     The average of marks obtained by 120 candidates was 35. If the average of marks of passed candidates was 39 and that of failed candidates was 15, the number of candidates who passed the examination is ?

    100

    Correct Answer

    110

    Incorrect Answer

    120

    Incorrect Answer

    150

    Incorrect Answer
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    Explanation:

    Suppose x passed and (120-x) failed

    Then

    x*39 + (120-x)*15 = 120*35

    or

    24x = 2400

    x = 100

    By: Deepak Dawra
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