A can do a piece of work in 10 days and B can do the same work in 12 days. A and B worked together for 5 days. How many more days are required to complete the remaining work if they work together? Select:
A) 3 (5/18)
B) 3 (5/16)
C) 3 (5/11)
D) 3 (5/13)
E) 5/11
A can do 1/10 of the work in a day.   B can do 1/12 of the work in a 1 day.   Both of them together can do (1/10 + 1/12) part of work in 1 day = (6 + 5)/60 = 11/60   They take 60/11 days to complete the work together.   Given that they already worked for 5 days.   The number of days required to complete remaining work =&gt; 60/11 - 5 = 5/11 = 5/11 days.   Answer:5/11
<result>E</result>
A can do a piece of work in 10 days and B can do the same work in 12 days. A and B worked together for 5 days. How many more days are required to complete the remaining work if they work together?