General Knowledge (GK) Quizzes GAT

Question:
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?

Option A):
$408
Option B):
$425
Option C):
$325
Option D):
$375
Option E):
$400

Correct Answer is Option E):
$400