Answer: Amount of sales s = $6240 is the salary at ABC company is greater than at XYZ company.
Explanation:
Since we have given that
Annual salary of ABC company = $45000
Annual salary of XYZ company = $38000
Rate of commission = 2%
Amount of salary after commission at XYZ company would be

So, Difference between is given by

Hence, Amount of sales s = $6240 is the salary at ABC company is greater than at XYZ company.