Final answer:
To find the average time spent on calls per hour, the number of calls (8.7 calls/hour) is multiplied by the average call duration (6.4 minutes/call), resulting in approximately 55.68 minutes. Therefore, none of the given options accurately reflect the actual average time spent on calls per hour.
Step-by-step explanation:
The customer service representatives receive an average of 8.7 calls per hour, and each call lasts an average of 6.4 minutes. To calculate the average time spent on calls per hour by each staff member, we can multiply the number of calls by the average call time:
Average time spent on calls per hour = Number of calls per hour × Average call duration
This equates to:
8.7 calls/hour × 6.4 minutes/call = 55.68 minutes/hour
We divide by 60 to convert the time to hours since we are interested in the average time spent per hour:
55.68 minutes/hour ÷ 60 minutes/hour = 0.928 hours, or approximately 55.68 minutes.
However, since the question asks for the nearest option and only provides minute options, the answer must be rounded to the nearest option provided which would be:
55.68 minutes ≈ 56 minutes per hour. Hence, none of the given options (A, B, C, D) are correct as they do not match the correct calculation.