Question: People arrive at a visa office at the rate of one every 15 ±10 minutes. There are three officers (A, B, and C) who scrutinize the applications for a duration of 30 ± 10 minutes. From the past records, it is found that on an average, 25% of the applications are rejected. Visa applicants form a single line and go to the officer whoever becomes free. If all the three are free, customers always select officer B who is believed to be considerate. Simulate for 500 visa applicants and determine
a) How many of them selected officer B?
b) How many visa applications are rejected?