math

posted by .

A bell rings every 2 hours, a second bell rings every 3 hours, and a third bell rings every 4 hours. If all 3 bells ring at 9:00 AM. , at what time will all 3 bells next ring?

  • math -

    The LCM of 2, 3 and 4 is 12.

    Therefore you must wait 12 hours, until 9:00 PM.

  • math -

    THERE WALL CLOCK ARE THE ROOM ALL THE CLOCK RINGING TOGETHER AT 6 OCLOCK IN THE MORNING AFTER THAT1ST CLOCK RINGS ONCE FOR EVERY 20 MINUTES & 2ND CLOCK RINGS ONCE FOR EVERY 30 MINUTES & 3RD CLOCK RINGS FOR EVERY 40MINUTES WHAT WOULD BE THE TIME AT WHICH ALL THE CLOCK RING TOGETHER FOR THE SECOND TIME.

    WHAT IS THE FORMULA...& WHAT IS THE ANSWER..

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    a bell rings er=very 2hours,a srcond bell rings every 3 hours,and a third bell ring every 4 hours.if all bells ring at 9:00a.m.,whst time will the next 3 bells ring?
  2. math

    A bell rings every 2 hours, a second bell rings every 3 hours, and a third bell rings every 4 hours. If all 3 bells ring at 9:00 AM. , at what time will all 3 bells next ring?
  3. Math-geometry

    Determine if the argument is valid or invalid. Give a reason to justify answer. If the bell rings, then we answer the door. The bell rings. We answer the door.
  4. physics

    At a carnival, you can try to ring a bell by striking a target with a 11.6-kg hammer. In response, a 0.413-kg metal piece is sent upward toward the bell, which is 4.22 m above. Suppose that 26.2 percent of the hammer's kinetic energy …
  5. 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
  6. 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
  7. Physics

    At a carnival, you can try to ring a bell by striking a target with a 8.46-kg hammer. In response, a 0.411-kg metal piece is sent upward toward the bell, which is 5.22 m above. Suppose that 34.4 percent of the hammer's kinetic energy …
  8. Math

    Can you explain how to do this question? "Three clocks ring once at the same time. After that, the first clock rings after every 90 minutes, the second after every 30 minutes, and third after every 60 minutes. After how many minutes
  9. maths

    A bell rings every 10 minutes and a buzzer sounds every 15 minutes they were both heard at 2nd clock When would they both be heard next?
  10. math

    Two big bells in a haĺl starts to ring together at 5:00 hours one rings every 15 sec and other every 12 sec how often will they ring together

More Similar Questions