A set of 10 new questions in each round Question: ( 1 of 10 ) Ronald can finish a work in 55 days. Jason can finish the same work in 60 days while Jeffrey can finish the work in 65 days. How long will it take to finish it if they work together? (A) 19 391/431 days or 19.907 days (B) 60 days (C) 45 days (D) 38 391/431 days or 38.907 days