GRE Sample Test 4 Quantitative Reasoning 1

The problem doesn’t say how many employees work at the firm, so let’s pick a number. Since the problem involves percents, let’s pick 100 as the total number of employees.
If there are 100 employees working at the firm, then one quarter of them, or 25, are managers. That leaves 75 employees, one-third of which, or 25, are assistants. Consequently, 100 − 25 − 25 = 50 employees are left to be technicians. Now check the quantities. Quantity A, the number of managers, is 25. Quantity B, half the number of technicians, is half of 50, which is also 25. Pick (C) the two quantities are equal.