Answer:
Part 1) The cost per second is 
Part 2) The cost per customer is 
Step-by-step explanation:
Part 1) Calculate the cost per second
we know that
To find out the cost per second, divide the total cost by the time
Let
x ----> the total cost
y ----> the time in seconds
we have



therefore
The cost per second is 
Part 2) Calculate the cost per customer
we know that
To find out the cost per customer, divide the total cost by the number of customers
Let
x ----> the total cost
y ----> the number of customers
we have



therefore
The cost per customer is 
The problem is really asking 5/6 divides by 1/6. This yields 5. Hope this helps!<span />
Answer:
3 and 60
Step-by-step explanation:
A proportion is a mathematical expression in which two ratios are shown to be equal.
Hence
is proportion .
it can be also written as a:b= c:d
The four part a,b,c,d can be divided into two groups
- means : b and c are means
- extremes: a and d are extremes
based on above discussion
in proportion 3/15=12/60
3 is in position of a
and
60 is in position of d
Thus, 3 and 60 are extremes in 3/15=12/60 proportion.
Answer:
?
Step-by-step explanation: