Answer: The secretary's salary prior to the reduction was $42,000. 
Explanation:
Hi, to answer this question we have to write an equation: 
The original secretary's salary (x) multiplied by the percentage reduction in decimal form (4.5/100) must be equal to the amount of the reduction (1890) 
Mathematically speaking: 
x (4.5/100)= 1890 
Solving for x: 
x (0.045)= 1890 
x = 1890/ 0.045 
x = 42,000 
 The secretary's salary prior to the reduction was $42,000.