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MATH

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One light flashes every 2 minutes and another light flashes every 3.5 minutes. Suppose both lights flash together at noon. What is the first time after 1 PM that both lights will flash together ?

  • MATH -

    every 14 minutes, the lights are in synch. 14*5 = 70 is the lowest multiple of 14 greater than 60.

    So, at 1:10 pm they are again together.

  • MATH -

    isnt it every 14 minutes meaning at 1:14pm not 1:10pm. Because
    2,4,6,8,10,12,14
    3.5, 7, 10.5, 14
    so they will meet again in every 14 minutes

  • MATH -

    no, because they started in synch at 12:00. 70 minutes later it's 1:10.

  • MATH -

    Yup

  • MATH -

    no cos u stupid

  • MATH -

    Steve and stever, u guys r really dumb.

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