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

    Question

    ‘a’ is directly proportional to ‘b’. If at a=30,

    the value of ‘b’ is 20% greater than ‘a’, then find the value of ‘a’ when b=54.
    A 45 Correct Answer Incorrect Answer
    B 53 Correct Answer Incorrect Answer
    C 77 Correct Answer Incorrect Answer
    D 95 Correct Answer Incorrect Answer

    Solution

    ATQ,

    A = k × b (Where ‘k’ is proportionality constant)

    ATQ;

    30 = k × (1.2 × 30)

    Or, k = (5/6)

    So, required value = (5/6) × 54 = 45

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