Question

You buy a bicycle helmet for $22.26, which includes 6% sales tax. The helmet is discounted 30% off the selling price. What is the original price?

Answer 1

Final cost/1.06 = sale price

$\frac{22.26}{1.06} = 21.06$

The sales price is $21.06

Sales price/.70 (70% of the original price) = original price

$\frac{21.06}{.70} = 30.09$

The original price of the helmet was $30.09

Answer 2

6% de 22,26 = 
6*22,26/100 = 
1,3356
22,26 - 1,3356 = 20,9244
70% de 20,9244 = 
70*20,9244/100 = 
14,64708 ~ 14,64