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Three bells rings at an interval of 35 and 42 minutes respectively .If they last rung at 12:00 at what time will they ring next?

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You first get the L.C.M of 35and 42 which is 210 so this will be minutes.
Then you convert minutes to hours which will be 3½ hours. You add it to the time and your answer will be
             1530 hours or 3.50 pm
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3.50


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3.50

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3.50

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3.50
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3:30

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