Harper's Helpers provides locksmith services. One type of service call is to evaluate private residences for security concerns and make recommendations for a safety plan. Use the data below to determine the company's total contribution margin, contribution margin per service call, and contribution margin ratio when $200$ service calls are made in the month of June.

View the data.

Select the formula labels needed to compute the contribution margin. Then, complete the table to calculate the contribution margin per service call, then the company's total contribution margin.

Per call

Contribution Margin $$

Data

Service Revenue

$$110$ per service call

Variable Costs

$55$ per service call

Fixed Costs

$9,700$ per month