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Mathematics
OpenStudy (anonymous):

Megan is a sales associate at a perfume store. Each week she earns $200 plus a 3% commission of all her sales. This week she earned $218. How much, in dollars, were Megan's perfume sales this week? (Do not put a $ in your answer.)

OpenStudy (anonymous):

solve \[200+.03x=218\] for x

OpenStudy (anonymous):

you can just about do it in your head because you know that $18 was on commission alone. so the question is "18 is 3% of what number" which is the same as \[\frac{18}{.03}=\frac{1800}{3}=600\]

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