A can do a work in 9 days and B can do the same work in 27 days. If they work together, in how many days will they complete the work?  Choose the correct option
A) 6 3/4 days B) 7 3/4 days C) 5 3/4 days D) 6 1/4 days E) 6 2/4 days
One day's work of A and B = 1/9 + 1/27 = (3+1)/27 = 4/27 So, the time taken to complete the work is 6 3/4 days.   6 3/4 daysNSWER:6 3/4 days
<result>A</result>
A can do a work in 9 days and B can do the same work in 27 days. If they work together, in how many days will they complete the work?