Bus A and Bus B leave the bus depot at 4 pm. Bus A takes 15 minutes to do its route and bus B takes 35 minutes to complete its r
oute. At what time are they both back at the bus depot together? Give your answer as a 12-hour clock time.
1 answer:
Answer:
The bus will meet again at the depot at 5.45 pm
Step-by-step explanation:
Find the prime factors of 15:
15 = 3 x 5
Find the prime factors of 35:
35 = 5 x 7
Find the LCM:
LCM = 3 x 5 x 7
LCM = 105 mins
Find the time that the bus will be at the depot together:
Time = 4pm + 105 mins
Time - 4 pm + 1 hour + 45 mins
Time = 5.45 pm
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