Question

2. In a lighting, the green light glows after
every 12 seconds, the red light glows after
every 30 seconds, the blue light glows after
every 34 seconds and the yellow light glows
after every 56 seconds. Find the least time in
minutes after which they all glow together.
FA39
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Answer 1

Answer:

I guess 56 seconds is the answer.

Step-by-step explanation:

green light glows after 12 seconds

red light glows after EVERY 30 seconds, so it'll glow (30-12=18) seconds after green light.

blue light glows after EVERY 34 seconds, that'd be (34-30=4) seconds after red light

yellow light glows after EVERY 56 seconds, that means (56-34=22) seconds after blue light

So, in all the least minutes after which they all glow together = 12 + 18 + 4 + 22

=56 seconds

                                   

Hope you got this!