Question

    Two cars of equal length are running in the same

    direction at 48 kmph and 32 kmph. The faster car passes the slower car in 18 seconds. The length of each car is.
    A 150m Correct Answer Incorrect Answer
    B 100m Correct Answer Incorrect Answer
    C 75m Correct Answer Incorrect Answer
    D 40m Correct Answer Incorrect Answer

    Solution

    Let the length of the car be x meters Relative speed = 48 – 32 = 16 kmph. Relative speed in mps =16 × 5/18 mps = 40/9 mps Time = Distance/Speed ⇒ 18 = 2x/(40/9 ) ⇒ 2x= (18 × 40)/9 ⇒ x = 40m ∴ The length of car is 40m

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