Question

Bus A and Bus B leave the bus depot at 5 pm.
Bus A takes 30 minutes to complete its route once and bus B takes 35 minutes to complete its route once.
If both buses continue to repeat their route, at what time will they be back at the bus depot together?

Answer 1

Answer:

LCM(30, 35) = 210 minutes.

The 2 Buses will be back at the depot 210 minutes after 5pm, or 5pm + 210 minutes =5 + 3.5 hours =8:30pm

Answer 2

Answer:

3hr 30min

Step-by-step explanation:

Time at which both buses reach the depot together is LCM of the duration of routes

5|30,35

6 |6,7

7|1,7

1,1

LCM is 5 × 6 × 7 = 210 minutes = 210/60

= 3hr 30min

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