Task: Question Answering
Input (English): Problem: a man can row a distance of 5 km in 60 min with the help of the tide. the direction of the tide reverses with the same speed. now he travels a further 20 km in 10 hours. how much time he would have saved if the direction of tide has not changed ?
Options: a. 2, b. 8, c. 1, d. 6, e. 5
Output (English): d