Each day, a factory’s total expenses are equal to a fixed daily expense plus a variable expense that is directly proportional to the number of units of product produced by the factory during that day. If the factory’s total expenses for a day in which it produces 3,000 units are $5,500, and the total expenses for a day in which it produces 7,000 units are $8,200, what is the factory’s fixed daily expense? (Disregard the dollar sign when gridding your answer.)




320 GRE Math Problems