Question

three city tour bus live the bus stop at 9.00 AM, bus A return every 30 minutes bus B returns every 20 minutes and bus C return every 45 minutes what is the next time the bus will return all at the same time to the bus stop

Answer 1

The next time the three tour buses will return together is 12 PM.

Given that A will return every 30 minutes bus B returns every 20 minutes and bus C will return every 45 minutes .

They will return together on the LCM of the time taken by each bus .

LCM of (30,20,45) = 180

The buses will return together after 180 minutes i.e at 12 PM.

Answer 2

12:00 PM

Step-by-step explanation:

We have given that

All the three buses leave at = 9:00 AM

First bus complete its journey in = 30 mins

Second bus complete its journey in = 20 mins

Third bus complete its journey in = 45 mins

We will take LCM of all the buses : => 30, 20, 45

It will be => 180

So here 180 is the number of minutes that these three buses will take to complete their journey simultaneously .

180/60= 3Hrs

Then = 9+3=12

The answer is 12 PM.