Question

Cody Summer sells tires for tractor-trailers. He earns 4.5 percent commission on the first $6,000, 8 percent on the next $6,000, and 12 percent on sales over $12,000. Last month he sold $18,000 worth of tires. What was his total commission?

Answer 1

$1470

Explanation:

Summer earned 4.5% on $6000 +8% on $6000 + 12% on ($18000-12000) = $6000, for a total of 24.5% of $6000.

commission = 0.245 · $6000 = $1470

Summer earned a total commission of $1470.