Leas Corporation staffs a helpline to answer questions from customers. The costs of operating the helpline are variable with respect to the number of calls in a month. At a volume of 25,000 calls in a month, the costs of operating the helpline total $452,500.

To the nearest whole cent, what should be the average cost of operating the helpline per call at a volume of 25,300 calls in a month? (Assume that this call volume is within the relevant range.)

$18.93
$18.00
$17.89
$18.10

The average cost of operating the helpline per call at a volume of 25,300 calls in a month will be $18.10

Explanation:

The costs of operating the helpline are variable with respect to the number of calls in a month. At a volume of 25,000 calls in a month, the costs of operating the helpline total $452,500.

The average cost of operating the helpline per call = $452,500/25,000 = $18.10

At a volume of 25,300 calls in a month, The average cost of operating the helpline per call does not change but the total costs of operating the helpline increase because the costs of operating the helpline are variable.

Total costs of operating the helpline = $18.10 x 25,300 = $457,930

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