A) 8:30:36 a.m.
B) 8:03:36 a.m.
C) 8:36:03 a.m.
D) 8:36:30 a.m.
Correct Answer: B
Solution :
All the three bulbs glow at once at 8 a.m. The time when they glow simultaneously again = L.C.M. (24, 36, 54) seconds =216 seconds = 3 minutes 36 seconds \[=\sqrt{64+36}=10\,cm\]The time when the three bulbs glow together again is at 8 : 03 : 36 a.m.You need to login to perform this action.
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