A traffic light changes every 30 seconds another traffic light changes every 40 seconds both lights just changed after how money minutes wil

Question

A traffic light changes every 30 seconds another traffic light changes every 40 seconds both lights just changed after how money minutes will both lights change at the same time

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Verity 5 years 2021-09-01T15:28:32+00:00 1 Answers 19 views 0

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  1. Jezebel
    0
    2021-09-01T15:29:34+00:00
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    Answer:

    120 seconds/2 minutes

    Step-by-step explanation:

    You need to find the LCM of 30 and 40 which is 120.

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