Task: Question Answering
Input (English): Problem: to fill a tank, 25 buckets of water is required. how many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to 3 / 10 of its present ?
Options: a. 61.5, b. 60.5, c. 63.5, d. 83.333, e. 64.5
Output (English): d