aa201122 aa201122
  • 21-01-2021
  • Social Studies
contestada

25. One caution sign flashes every 4 seconds, and another
caution sign flashes every 10 seconds. At a certain
instant, the 2 signs flash at the same time. How many
seconds elapse until the 2 signs next flash at the same
time?
Help me

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corbyn4731
corbyn4731 corbyn4731
  • 21-01-2021

Answer:

20

Explanation:

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