can anyone please explain this step
if you know please help me:)
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Answer:
The required time is the LCM OF 20 and 22 and the LCM is 220
Step-by-step explanation:
the LCM is taken so that we could easily find when they will meet on the same time.
you see in the question the difference between the time taken by 2 person is 2 min. in order to meet at the same time we have to take out the LCM of 20 minutes and 22 minutes which will be 220 minutes
If we will convert it in to hours it will 3 hours and 40 minutes
so the correct answer is option (a).
The best way crack these question is to take the LCM of time taken by 2 people .
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