Three bells rings at intervals of 30 40 and 45 seconds respectively at what time will they ring again together if they started ringing simulataneously at 5:15 a.m.
Answers
Answered by
0
Step-by-step explanation:
Prime factorisation of
30 = 2×3×5
40 = 2×2×2×5
45 = 3×3×5
L.C.M of 30, 40 and 45 is = 2×2×2×3×3×5
= 360 seconds
Converting 360 seconds into minutes =
360/60 = 6 minutes
the bell will ring again at 5:21 a.m. (Answer)
Answered by
0
Answer:
5:21 a.m.
Step-by-step explanation:
First let's take the LCM for 30, 40 and 45
And LCM equal to 360.
360 seconds = 6 minutes
therefore 5:15 + 6 minutes = 5:21
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