Math, asked by ironmanemc2, 6 days ago

A red light flashes every 18 seconds.

A green light flashes every 27 seconds.

Both lights flash together.

How many seconds will it be before the lights flash at the same time again? Write your answer as a single number with units.

Answers

Answered by striderhawk

2

Answer:

54 sec.

Step-by-step explanation:

lcm of 18 and 27 is 54

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