SOLUTION: Please help me on this question I tried but I couldn't do it.
Three bells ring at intervals of 15,20 & 30 minutes.If they all ring at 11 a.m. together,at what time will they next
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Question 1062392: Please help me on this question I tried but I couldn't do it.
Three bells ring at intervals of 15,20 & 30 minutes.If they all ring at 11 a.m. together,at what time will they next ring together? Thank you and please answer my question
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
In 60 minutes ( 1 hour ), the 30 minute bell
rings foor the 3rd time, 11, 11:30, and 12
--------------------------------------
The 20 min bell rings for the 4th time:
11, 11:20, 11:40, and 12
-------------------------------------
The 15 min bell rings for the 5th time:
11, 11:15, 11:30, 11:45, and 12
------------------------------
So, at 12 AM they all ring together
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