Suppose the employees are allowed to process multiple orders at a time, but the preference would be to finish the orders of clients who placed their orders earlier.
Also assume that the fourth client came in only at 10 : 35. Between 10 : 00 and 10 : 30, for how many minutes is exactly one of the employees idle?

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Solution

The correct option is B
10

The time for which exactly one employee is free would be
10.02 - 10.05 - (Bani) - 3 Minutes.
10.10 – 10.17 (Anish/Bani) - 7 minutes (depending on who prepares the order for client 3.
After 10.17 both of them would be free. Therefore, one of them would be free for 3 + 7 = 10 minutes.

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