math

posted by .

a red light winks every 6 seconds, a white one every 10 seconds, and a green one every 14 seconds. how often they wink together?

  • math -

    6 = 2*3
    10 = 2*5
    14 = 2*7

    LCM(6,10,14) = 2*3*5*7 = 210

    so, every 210 seconds they will blink at the same time

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    if one sign binks every 7 seconds and the other sign blinks every 9 seconds in how may seconds will they blink together again?
  2. Math

    the green light flashes every 3 seconds,the red every 5 seconds and white at 10 seconds. iF they flash at 12 noon.When will they flash together again in a minute?
  3. math (NEW ANSWERS)

    identify the fraction that is equivalent to 3/8. A.15/32 B.12/32(I PICKED THIS) C.12/24 D.9/32 -------------------------- A video game has three villains who appear on screen at different intervals.one villain appears every 5 seconds,a …
  4. mathematics

    A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring ant the chirp occur together right now, they will occur together in A. 40 seconds B. 41 seconds C. 42 seconds D. 43 seconds
  5. Math

    A bell rings every 2 seconds, and a bird chirps every 3 seconds. If the ring and the chirp occur together right now, they will occur together in A. 40 seconds B. 41 seconds C. 42 seconds D. 43 seconds
  6. math

    on a radio tower, a red light flashes every 6 seconds and a blue light flashes every 10 seconds. if both lights flash together at a certain time, how many seconds later will both lights flash together the next time
  7. math

    three fireworks are fired at the same time. The first one is fired every 64 seconds, the second one is fired every 84 seconds and the third one is fired every 96 seconds. How many seconds after they start will it take until all three …
  8. math

    One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again
  9. Math

    If a red light flashes every 3 seconds, a blue light flashes every 4 seconds and a blue light flashes every 5 seconds and they all flashed together at midnight when would be the next time they all flash together?
  10. maths

    a blue light flashes every 8 seconds and a red light flashes every 12 seconds both lights have just flashed together how many secons will they flash together

More Similar Questions