The employees at Mobile Sun Lotion Company roam the beaches with a tank of premium suntan lotion strapped on their backs. For a $2 charge, the employees will spray sunbathers with suntan lotion. Last year, Mobile sprayed 250,000 customers and incurred the following costs:
Total variable costs $175,000
Total fixed costs 50,000
Total costs $225,000
Assuming that this activity is within the relevant range, what would Mobile's total contribution margin have been last year if only 240,000 customers were sprayed?