Question

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 rind at 9:00am., at what time will all 3 bells next ring?

Answer 1

the answer is that they will all ring at 9:00 pm

Explanation:

9am=2, 3, 4

10am=0

11am= 2

12pm=3

1pm=2, 4

2pm= 0

3pm=3, 2

4pm= 0

5pm= 2, 4

6pm= 3

7pm=2

8pm= 0

9pm=2, 3, 4

Answer 2

9:00 P.M.

Explanation:

All 3 bells ring at 9AM

1st bell: every 2 hours:

9AM, 11AM, 1PM, 3PM, 5PM, 7PM, 9PM

2nd bell: very 3 hours:

9AM, 12AM, 3PM, 6PM, 9PM

3rd bell: every 4 hours:

9AM, 1PM, 5PM, 9PM

So All 3 bells will ring at 9PM again