Task: Question Answering
Input (English): Problem: a waiter ' s salary consists of his salary and tips. during one week his tips were 7 / 4 of his salary. what fraction of his income came from tips ?
Options: a. 4 / 9, b. 5 / 4, c. 5 / 8, d. 5 / 9, e. 7 / 11
Output (English): e