Sales person will earn a commission of $ 16500.54 if her total car sales are $275,009
Solution:
Given, A car salesperson earns a commission that is a percentage of a price of each car she sells.
Last week she sold 3 cars for a total of $ 75000 and earned a $ 4500 commission.
We have to find at that rate what will the salesperson earn in commission if her total car sales are $275,009?
Now, 75000 ⇒ 4500 commission
Then, 275009 ⇒ n commission
So by chris cross method

Hence, sales person will earn a commission of $ 16500.54.