DS Archive | Re: At a certain sales agency, each salesperson receives a monthly

At a certain sales agency, each salesperson receives a monthly base salary of $2000, plus commission equal to 10% of her sales over $2500 for that month. How much did Allison earn in June?

(1) The amount that Allison earned in June was equal to 20% of her total sales for June.

(2) Had Allison sold $17500 more than she did in June, her total earnings would have equaled 15% of her sales.