Six bells commence tolling together and toll at intervals
of 2,4,6,8,10,12 seconds respectively. In 30 minutes how many
times do they toll together?  Pick one.
A) 14	B) 15	C) 16	D) 17	E) 18
To find the time that the bells will toll together we have   to take L.C.M of 2,4,6,8,10,12 is 120.   So,the bells will toll together after every 120 seconds   i e, 2 minutes   In 30 minutes they will toll together [ 30/2 +1= 
<gadget id="calculator"> 30/2 +1</gadget>
<output>16</output>
16 times   ANSWER 16
<result>C</result>
Six bells commence tolling together and toll at intervals
of 2,4,6,8,10,12 seconds respectively. In 30 minutes how many
times do they toll together?