Question

Three city tour buses leave the bus stop at 9.00 A.M. Bus A returns every 30 minutes, Bus B returns every 20 minutes and Bus C returns every 45 minutes. What is the next time, the buses will all return at the same time to the bus stop. *
a 1:00 PM
b 12 noon
c 7:00 PM
d 11.30 PM

Answer 1

Answer:

12 noon

Step-by-step explanation:

Answer 2

Answer:

lcm of 30, 20, 45 = 180 min

=> 180 / 60 = 3 hrs

next time the buses will all return = 9 + 3 = 12 noon

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