Two lighthouses can be seen from the top of a hill. The first flashes once after
every 7 seconds and the other flashes once every 12 seconds.
If they flash at the same time, how long will it be until they flash at the same
time again?
Answers
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1
Answer:
1min 24sec
Step-by-step explanation:
If the light house flash at the same time,then they will flash in every 1 min 24 second
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