Question

In a public telephone arrivals are on the average of 15 per hour
a call on the average takes 3 min if there is one phone
expect number of caller in telephone at any time
the proportion of the time the telephone is expected to be idle

Answer 1

Answer:

15 *3 =45is the answer of this question

Answer 2

Step-by-step explanation:

15×3=45 is the answer of this question