Question

six bells start ringing together. if they ring at the intervals of 2,4,6,8,10and 12 seconds respectively, how many times will they ring together in 30 mintus?

Answer 1

Answer: 15 times

Step-by-step explanation:

Find the Least Common Multiple of 2, 4, 6, 8, 10, 12.

LCM of 2, 4, 6, 8, 10, 12 = 120

So the bells will ring together after every 120 seconds

In 30 minutes, there are (30 * 60) = 1800 seconds

Therefore, the number of times the bells will ring in 30 minutes is = 1800 / 120

1800 / 120 = 15 times