Question

    A thief steal a car at 2:30 pm and drive at a speed of

    80 km/hr. Police came to know about thief at 3:30 pm and start chasing him with the speed of 90 km/hr. After how much kilometre police will catch the thief?
    A 720 km Correct Answer Incorrect Answer
    B 640 km Correct Answer Incorrect Answer
    C 860 km Correct Answer Incorrect Answer
    D 540 km Correct Answer Incorrect Answer

    Solution

    Police came to know that thief after 1 hours. So distance b/w thief and the police 80 km, now police start chasing him with a relative speed of (90-80) = 10 km/hr. Time taken by police = 80/10 = 8 hrs. Distance run by police = 90 × 8 = 720 km

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