<PRE><B>Question 327068</B>
Bus A runs every 8 minutes, Bus B runs every 10 minutes, and Bus C runs every 12 minutes. If all three buses leave the station at 8:00 a.m., when is the next time all three buses leave the station at the same time?
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Find the least common multiple of 8,10,12.
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8 = 2^3
10 = 2*5
12 = 3*2^2
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lcm = 2^3*3*5 = 120
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120 min = 2 hrs.
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Ans: 10:00 am
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Cheers,
Stan H.
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a.9:00 am
b.10:00 am
c.11:00 am
d.12:00 pm
e.1:00 pm
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