Question 49003
18,000+.05x=37,000 or .05x=19,000 or x=19,000/.05 or sales=380,000 for Kathy's $37,000 salary.

18,000+.05x=40,000 or .05x=22,000 or x=22,000/.05 or sales=440,000 for Kathy's salary of $40,000.

Thus her sales are between $380,000 & $440,000.