πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    A car running with a speed of β€˜x’ m/sec makes 5

    rounds of a circular field having radius 42 metres, in 10 seconds. Find the time taken by car to cover 300 metres with the speed of (x – 32) m/sec.
    A 7 seconds Correct Answer Incorrect Answer
    B 5 seconds Correct Answer Incorrect Answer
    C 3 seconds Correct Answer Incorrect Answer
    D 2 seconds Correct Answer Incorrect Answer

    Solution

    Distance covered by the car = 5 Γ— 2Ο€r = 2 Γ— (22/7) Γ— 42 Γ— 5 = 1320 metres Speed of the car = 1320/10 = 132 m/sec Required time taken = 300/(x – 32) = 300/100 = 3 seconds

    Practice Next
    ask-question