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    Question

    In each of the following questions, a question is followed by two or three statement. Read all the statements and find that which statements are required to answer the question and answer accordingly. 

    What is the time taken by train to go from Station A to

    Station B? Statement I:  If the train increases its speed by 20%, then it reaches 40 minutes earlier. Statement II:  If the train decreases its speed by 40%, then it reaches 90 minutes late.
    A If the data in statement I alone is sufficient to answer the question. Correct Answer Incorrect Answer
    B If the data in statement II alone is sufficient to answer the question. Correct Answer Incorrect Answer
    C If the data either in statement I alone or statement II alone are sufficient to answer the question. Correct Answer Incorrect Answer
    D If the data given in both I and II together are not sufficient to answer the question. Correct Answer Incorrect Answer
    E If the data in both the statements I and II together are necessary to answer the question. Correct Answer Incorrect Answer

    Solution

    From I : distance/ (120s/100) = t – 40 D=(t-40)×6s/5 From II : distance/(60s/100) = t + 90 D=(t+90)×3s/5 both statement given distance are same .  (t-40)×6s/5=(t+90)×3s/5 t=170min

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