For a Marriott Hotel Call Center, the Expected Service Rate

Essay

For a Marriott hotel call center, the expected service rate was 3.0 minutes per telephone call per customer service representative (CSR). With 3 telephone CSRs on-duty during the 6:30 to 7:00 am time period, and assuming a 90% target CSR labor utilization rate, how many telephone calls can these 3 CSRs handle during this time period?