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Railways Quantitative Aptitude Speed, Time and Distance Question Bank Time, Speed and distance Sample Test Paper-12

  • question_answer
    The speed of a car increases by 2 kilometre after every one hour. If the distance travelled in the first one hour was 35 kilometres, then the total distance travelled in 12 hours was

    A)  460 km

    B)         552 km

    C)  483 km

    D)  572 km

    Correct Answer: B

    Solution :

    [b] Distance travelled per H = 35, 37, 39 \[{{S}_{n}}=\frac{n}{2}[2a+(n-1)d]\] n = 12, a = 35, d = 2 \[=\frac{12}{2}[2\times 35+(12-1)\times 2]\] = 6[70 + 22] \[=6\times 92=552\,\,km\]


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