Mathematics Quizzes Percentage

Question:
Helen went to the stationers and bought things worth Euro 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?

Option A):
Euro 20
Option B):
Euro 15
Option C):
Euro 15.7
Option D):
Euro 19.7

Correct Answer is Option D):
Euro 19.7

Explanation:
Let the amount taxable purchases be Euro x.
Then, 6% of x = 30/100
x = (30/100 x 100/6) = 5.
Cost of tax free items = Euro [25 - (5 + 0.30)] = Euro 19.70