In a park, three parrots sing together at 10 a.m. If the parrots sing regularly at the intervals of 10 15 and 12 minutes respectively within, what time will they sing together again?

15 minutes

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30 minutes

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60 minutes

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90 minutes

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Solution

The correct option is C 60 minutes
The lcm of (15,10,12) = 60
Therefore, parrots sing together after every 60 minutes.

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In a park, three parrots sing together at 10 a.m. If the parrots sing regularly at the intervals of 10 15 and 12 minutes respectively within, what time will they sing together again?

The correct option is C 60 minutesThe lcm of (15,10,12) = 60 Therefore, parrots sing together after every 60 minutes.

The correct option is C 60 minutes
The lcm of (15,10,12) = 60
Therefore, parrots sing together after every 60 minutes.