Math, asked by ajaiross88, 1 month ago

Two lighthouses flash their lights every 20 seconds and 30 seconds respectively. Given that they flashed together at 7 pm, when will they flash together next time?

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Answers

Answered by pravargoyal2009

0

Answer:

The time they will flash again is-

7 pm+(The LCM of 20 & 30)

The LCM is 60.

60 mins= 1 hour

Therefore, 7 pm+1 hour= 8 pm

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