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30 November, 04:50

A red light

flashes on

every

8 secs and a

green light flashes on

flashes on every 10 secs. If the two

lights are switched on

at the same time.

After how long will both lights flash on

together?

+2
Answers (1)
  1. 30 November, 04:56
    0
    Both lights would flash together after every 30 seconds.

    Step-by-step explanation:

    6 = 2 * 3 and 10 = 2 * 5.

    LCM (Least Common Multiple) of 6 and 10 = 2 * 3 * 5 = 30.

    Therefore, both lights wold flash together after every 30 seconds.
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