A can do a work in 8 days. B can do the same work in 24 days. If both A & B are working together in how many days they will finish the work? Options
A) 3  B) 5  C) 4  D) 2  E) 6

Rationale: "a rate = 1 / 8 b rate = 1 / 24 ( a + b ) rate = ( 1 / 8 ) + ( 1 / 24 ) = 1 / 6 a & b finish the work in 6 days correct option is e"
Answer: E