Tough Ds

A publicist bills all of her clients at one of three rates: $100 per hour for gold-level clients, $125 per hour for platinum-level clients, and $175 per hour for diamond-level clients. How much money did the publicist bill her clients last month?

(1) of the hours were billed to gold-level clients.

(2) of the hours were not billed to platinum-level clients, and a total of $3500 was billed to the diamond-level clients. Statement (1) ALONE is sufficient, but statement (2) ALONE is not sufficient. Statement (2) ALONE is sufficient, but statement (1) ALONE is not sufficient. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. EACH statement ALONE is sufficient. Statements (1) and (2) TOGETHER are NOT sufficient.