SOLUTION: An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. J

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Question 234473: An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for $306. How much did it originally cost?
A. $325
B. $375
C. $400
D. $408
E. $425
I was given the correct answer but I dont know how to get it.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
306=(1-.15)x
306=.85x
x=306/.85
x=360 price after the first discount.
360=(1-.10)x
360=.9x
x=360/.9
x=400 original price of the flute.
Answer C).