New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The average score of a student increased by 5 marks when

    he scored 210 marks in his 60th test. Find the average score of the student after 60 tests.
    A 35 marks Correct Answer Incorrect Answer
    B 95 marks Correct Answer Incorrect Answer
    C 85 marks Correct Answer Incorrect Answer
    D 75 marks Correct Answer Incorrect Answer

    Solution

    ATQ, Let the average score of the student in 59 tests be ‘x’ So according to the question: 59x + 210 = 60 × (x + 5) 59x + 210 = 60x + 300 x = 210 - 300 x = 90 So, the average score of the student after 60 tests = 90 + 5 = 95 marks

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