A set of 10 new questions in each round Question: ( 1 of 10 ) Dorothy can finish a work in 46 days. Melissa can finish the same work in 47 days while Deborah can finish the work in 48 days. How long will it take to finish it if they work together? (A) 35.25 days (B) 30 2193/3313 days or 30.662 days (C) 15 2193/3313 days or 15.662 days (D) 47 days