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NNADVOKAT [17]
3 years ago
13

Sandra saves 12% of her salary for retirement. This year her salary was $3,000 more than in the previous year, and she saved $4,

200. What was her salary in the previous year? (Example 3)
Mathematics
1 answer:
Strike441 [17]3 years ago
6 0
X=salary last year
Need an equation that represents 3000 more than last year's salary

12%(x + $3000) = $4200
multiply everything in parentheses by 12%

.12x + 360 = 4200
Subtract 360 from both sides

.12x = 3840
Divide both sides by 0.12

x= $32,000 salary last year

Hope this helps! :)
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