Question

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?

Answer 1

Answer:

all bells toll together=210 times

Answer 2

Answer:

7 times

Step-by-step explanation:

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

then divide 120 by 30=4

then 30÷4= 7.5 means

they'll roll together 7 times