Task: Question Answering
Input (English): Problem: jerry went to a shop and bought things worth rs. 20, out of which 30 % went on sales tax on taxable purchases. if the tax rate was 6 %, then what was the cost of the tax free items ?
Options: a. 14, b. 14.7, c. 21.3, d. 21.5, e. 21.7
Output (English): b