Sandra saves 12% of her salary for retirement. this year her salary was $3000 more than in the previous year, and she saved $4200. what was her salary in the previous year?

The previous year's salary is x.

This year's salary is x + 3000.

12% of this year's salary is $4200.

12% * (x + 3000) = 4200

0.12(x + 3000) = 4200

x + 3000 = 35,000

x = 32,000

Her salary in the previous year was $32,000.

answer: 590

step-by-step explanation:

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: