A set of 10 new questions in each round. Question: ( 1 of 10 ) If Nicole can finish the work in 82 days and Billy can finish the same work in 87 days, then in how many days both can finish the work together? (A) 84.5 days (B) 84 36/169 days or 84.213 days (C) 169 days (D) 42 36/169 days or 42.213 days