Question 528471
He spent 70% of his salary and had $1200 left.
Let 'x' be his salary.
100%-70% = 30% left.
30%x = 1200
.3x = 1200
x = 4000
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Check the math.
.4*4000 = 1600
.3*4000 = 1200
4000 - 1600 -1200 = 1200
Correct.
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Answer:  His salary is $4000.
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Done.