SOLUTION: Nadia has a summer job in an electronics store. She is paid $400 per week, plus 5% commission on the total value of her sales. Nadia's average earnings are $780 per week. What i

Question 937736: Nadia has a summer job in an electronics store. She is paid $400 per week, plus 5% commission on the total value of her sales.
Nadia's average earnings are $780 per week. What is the average value of her weekly sales?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Nadia has a summer job in an electronics store. She is paid $400 per week, plus 5% commission on the total value of her sales.
Nadia's average earnings are $780 per week. What is the average value of her weekly sales?
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E(x) = 400 + 0.05x
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Solve::
400 + 0.05x = 780
0.05x = 380
x = 38000/5
x = 7600 dollars (amt. of sales)
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Cheers,
Stan H.
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