Question

Messages arrive at an electronic message center at random times, with an average of 9 messages per hour. What is the average number of messages that arrive in 3 hours?

1) 27
2) 18
3) 12
4) 6

Answer 1

To determine the average number of messages arriving in 3 hours, multiply the hourly average (9 messages) by 3. The result is 27 messages.

Step-by-step explanation:

If messages arrive at an electronic message center at an average of 9 messages per hour, then the average number of messages that would arrive in 3 hours is simply 3 times the average hourly rate. So, to find this number, we multiply 9 messages/hour by 3 hours:

9 messages/hour × 3 hours = 27 messages

Therefore, the average number of messages that arrive in 3 hours is 27.