A set of 10 new questions in each round Question: ( 1 of 10 ) If Patricia can finish the work in 5 days and William can finish the same work in 8 days, then in how many days both can finish the work together? (A) 13 days (B) 6.5 days (C) 6 1/13 days or 6.077 days (D) 3 1/13 days or 3.077 days