It takes Rumi 15 minutes to inspect a machine and Sami needs 18 minutes to inspect a machine. They both start inspecting machines separately at 9:00 AM. At certain points of time, both of them will finish inspecting a machine at the same time. When will this occur for the first time?
A. 11:30 AM
B. 10:45 AM
C. 10:30 AM
D. 1:00 PM
সঠিক উত্তরঃ
C.
10:30 AM
Explanation:
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