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A Challenge for you
Class X
Ch-1
Q. the traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds respectively. If they change simultaneously at 8 a.m. at what time will the change together again ?
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In this we have to find the LCM of them
48 = 2×2×2×2×3
72 = 2×2×2×3×3
108 = 2×2×3×3×3
LCM = 2⁴×3³ = 16×27 =432....
So after 432 seconds
Now convert it into min....
i.e. 432/60 = 7.2 min....
after 7 min. approx.....
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If this helps u then plzz mark it as BRAINLIEST....
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48 = 2×2×2×2×3
72 = 2×2×2×3×3
108 = 2×2×3×3×3
LCM = 2⁴×3³ = 16×27 =432....
So after 432 seconds
Now convert it into min....
i.e. 432/60 = 7.2 min....
after 7 min. approx.....
HOPE THIS HELPS U....❤❤❤
If this helps u then plzz mark it as BRAINLIEST....
❤❤❤ THANK YOU ❤❤❤
jass9584:
I have completed your challenge...
;-)
You're intelligent..... thanks
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