A set of 10 new questions in each round. Question: ( 1 of 10 ) If Kevin can finish the work in 47 days and Frank can finish the same work in 52 days, then in how many days both can finish the work together? (A) 99 days (B) 48 68/99 days or 48.687 days (C) 49.5 days (D) 24 68/99 days or 24.687 days