Question

Four bells first begin to toll together and then at intervals of 6, 7, 8 and 9 seconds respectively. Find how many times the bells toll together in two hours and at what intervals they toll together?

Answer 1

Find its lcm and that's the answer

Answer 2

Answer:

14

Step-by-step explanation:

lcm of 6,7,8,9 = 504

2 hours is 2*60 mins*60 seconds

(2*60*60)/504 =14.