Task: Question Answering
Input (English): Problem: a customer went to a shop and paid a total of $ 40, out of which $ 1.28 was for sales tax on taxable purchases. if the tax rate was 8 %, then what was the cost of the tax free items ?
Options: a. $ 19.54, b. $ 2076, c. $ 21.36, d. $ 22.72, e. $ 23.58
Output (English): d