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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?

A green light blinks every 4 seconds and a yellow light blinks every 5 seconds. When will both lights blink at the same time?
asked 87.4k views
1 vote
A green light blinks every 4 seconds and a yellow light blinks every 5 seconds. When will both lights blink at the same time?

asked
User Fevly Pallar
by
8.5k points

2 Answers

4 votes

Answer:

20 seconds

Explanation:

LCM 4 times 5 is 20 just think abt it

answered
User Jerry Jeremiah
by
8.4k points
3 votes

Answer:

20 seconds

Explanation:

4 x 5 = 20

answered
User Mr Random
by
8.2k points
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