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In takes Russel 20 minutes to inspect a car and Sohel needs 18 minutes to inspect a car. They both start inspecting cars separately at 8.00 A.M. At certain points of time, both of them will finish inspecting a car at the same time. When will this occur for the time?

Correct Answer: 11.00 A.M.
The least common multiple of 20 and 18 is 180. So, they will finish inspecting cars 180 minutes after starting. Now, 180 minutes = 3 hours So, 8 am + 3 hours = 11 am.

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