Two persons A and B can complete a piece of work in 40 days and 60 days respectively. If they work together, what part of the work will be completed in 6 days?  Choose the most appropriate option
A) 1/8 B) 1/3 C) 1/6 D) 1/2 E) 1/4
A's one day's work = 1/40   B's one day's work = 1/60   (A + B)'s one day's work = 1/40 + 1/60 = 1/24   The part of the work completed in 6 days = 6 (1/24) = 1/4.   Answer:1/4
<result>E</result>
Two persons A and B can complete a piece of work in 40 days and 60 days respectively. If they work together, what part of the work will be completed in 6 days?