A green light blinks every 4 seconds and a yellow light blinks every 5 seconds. When will both lights blink at the same time?

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Yossi Dahan asked Feb 19, 2022

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A green light blinks every 4 seconds and a yellow light blinks every 5 seconds. When will both lights blink at the same time?

Mathematics
high-school

Yossi Dahan asked Feb 19, 2022

by Yossi Dahan

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17 votes

Answer:

20 seconds

Explanation:

LCM 4 times 5 is 20 just think abt it

Adam Flanagan answered Feb 20, 2022

by Adam Flanagan

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20 votes

Answer:

20 seconds

Explanation:

4 x 5 = 20

Md Johirul Islam answered Feb 23, 2022

by Md Johirul Islam

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