Task: Question Answering
Input (English): Question: 2 persons allotted to one work. John can do piece of work in 30 days while Bruce alone can do it in 40 days. In how many days can John and Bruce working together to do it?

 Option A: 17 2/7days

 Option B: 17 1/7days

 Option C: 17 3/5days

 Option D: 18 1/7days

 Option E: 17 1/4days
Output (English): Option B