Three bells toll together at intervals of 9,12,15 minutes. If they start tolling together, after what time will they next toll together? 1 hour 2 ½ hour 1 ½ hour 3 hour
Answers
Answered by
1
Answer:
3 hour
LCM (9, 12,15) = 3×3×2×2×3x5 = 180
after 180 minutes or 3 hours the bells will toll together
Answered by
0
Answer:
3 hours.
Step-by-step explanation:
To find the time after which they will again toll together, you have to find their LCM. So, we have 9,12and 15, whose LCM is 180. Now since they were in minutes, we will convert the answer to hours.
180 min = 180/60 hours, which is 3hrs.
Hope you understood.
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